{"lien_WSTV":"","tax_name":"deprecated","tax_rate":20,"id_manufacturer":"0","id_supplier":"0","id_category_default":"485","id_shop_default":"1","manufacturer_name":false,"supplier_name":false,"name":"Master Grande Tradition \u00e0 R\u00e9p\u00e9tition Minutes","description":"<p><strong>In 2009, the Grande Maison in the Vall\u00e9e de Joux is unveiling some extraordinary timepieces embodying an original symbiosis between the technological breakthroughs of the 21st century and a tribute paid to the finest watchmaking traditions. <br \/><br \/><\/strong>The design and creation of such a masterpiece naturally depends on the authentic mastery of the intricacies of fine watchmaking, a mastery that Jaeger-LeCoultre has been cultivating for 176 years. The new line is distinguished by distinctive aesthetics and the joint presence on each model of two complications interpreted in a manner that is at once historical and innovative. The two first watch creations in the Master Grande Tradition collection feature combinations of functions that are new to the Manufacture: on the one hand, the first tourbillon associated with a perpetual calendar; and on the other, the first minute repeater with a two-week power reserve allied with a regulator display. Moreover, this new line will welcome the first ever silicon escapement from the Grande Maison, stemming from the research undertaken in the Jaeger-LeCoultre laboratories and aiming to further enhance the performances of this complicated timepiece. This major innovation will initially enrich the yellow gold limited editions only. The undeniable gain in precision will be certified by a new \u201c1000 Hours Chrono\u201d label developed by Jaeger-LeCoultre. Two limited series in yellow gold equipped with a silicon escapement, testifying to the ongoing quest for absolute precision.<br \/><br \/>Two limited series in yellow gold equipped with a silicon escapement, testifying to the ongoing quest for absolute precision.<br \/>The materials in which the two models in the Master Grande Tradition line will be issued include yellow gold. The specific feature of these two yellow gold models is that they house an innovative silicon escapement and that they are presented in limited series (300 for the tourbillon perpetual calendar model; and 100 for the minute repeater regulator model).<br \/><br \/>Silicon is not in itself entirely new to Jaeger-LeCoultre, since this material was already used in the revolutionary Master Compressor Extreme LAB, the first ever totally lubricant-free watch. After this landmark event, and in pursuing its constant quest for ultimate precision, Jaeger-LeCoultre has developed a new silicon escapement for the Master Grande Tradition, featuring a lever wheel and lever made from this high-tech material. Silicon boasts several key assets. First of all, it is an extremely hard material that is very resistant to wear and can thus be used without oil. Its excellent friction coefficient also considerably reduces rubbing within the movement. Its ultra-light weight translates into enhanced inertia, which in turn has a favourable effect on efficiency. Moreover, silicon manufacturing technologies enable the production of complex parts with shapes that are incomparably accurate compared with those in steel. This newfound flexibility in determining the geometry of the components makes it possible to produce openworked or hollowed structures with a lower moment of inertia in order to increase the energy transmitted to the balance. Silicon also offers the possibility of making single-block parts such as a lever with integrated pallets, which are more accurate by their very construction. <br \/><br \/>After considerable experimentation, Jaeger-LeCoultre has decided to cover the silicon parts with a diamond coating. Silicon is usually protected by a layer of silicon oxide (SiO2) to prevent the formation of fissures when the parts are handled. Nonetheless, friction and the wear of SiO2 against SiO2,, such as the lever against the escape-wheel, do not yield particularly remarkable results in tribological terms, since they are lower than those achieved by classic lubricated materials. This means a large proportion of what is gained by using silicon, such as a reduction in weight and a higher production precision, is in fact wasted because of an unfavourable friction coefficient. <br \/><br \/>Applying a diamond coating \u2013 the solution chosen by Jaeger-LeCoultre \u2013 affords enhanced protection against fissures than SiO2, but most of all offers vastly improved tribological results. Once plasma polished, the diamond nanocrystals are extremely smooth and hard. This process serves to achieve peerless resistance to wear and a friction coefficient equivalent to half that of SiO2. In this respect, a comparison of the friction coefficients is sufficiently eloquent: 0.08 between diamond and diamond, 0.16 between SiO2 and SiO2 and 0.13 between steel and ruby. The use of diamond-coated silicon for the escapement thereby increases the movement efficiency by 15%, a net 5.5-point gain. The inertia of the components is in fact divided by three, the manufacturing accuracy reduces backlash, while the losses due to friction are also considerably reduced.<br \/><br \/>A new \u201c1000 Hours Chrono\u201d label <br \/><br \/>In order to guarantee the precision that their avant-garde escapement contributes to these exceptional models, Jaeger-LeCoultre has chosen to reinforce its famous \u201c1000 Hours\u201d test. This extremely stringent set of tests currently serves to guarantee watches from the Grande Maison in terms of their water resistance, their shock resistance, their power reserve, their smooth operation in real wearing conditions, and of course their precision. Especially for the Master Grande Tradition watches equipped with a silicon escapement, this protocol is now complemented by a battery of tests, modelled on those performed by the Swiss Official Chronometer Testing Institute (COSC), with a view to granting a certificate testifying to an extremely high degree of precision. The difference between these tests and those conducted by the COSC lies in the fact that Jaeger-LeCoultre will test the precision not only of the movements without their complications, but \u2013 in keeping with the brand philosophy \u2013 that of the finished watches. Based on this procedure, the Master Grande Tradition watches equipped with a silicon escapement will thus be awarded the \u201c1000 Hours Chrono\u201d quality label. A final important detail: to encourage the fortunate owner of a Master Grande Tradition watch to attempt to grasp the secrets of silicon escapement, the sapphire crystal of the two yellow gold models features an integrated magnifying glass providing an enlarged view of this high-tech marvel. <br \/><br \/>A new line: two new movements <br \/><br \/>The new design of these models is distinguished by a blend of purity and refinement, featuring a style that stands out from the current collections in order to underscore the exceptional association of complications embodying major horological feats. The cases are crafted in precious materials only, while the watch dial is surrounded by a finely curved bezel and the finishing testifies to the care lavished on even the smallest details. The extraordinary diversity of the skills mastered within the Manufacture is essential to ensuring that each part, even if it is made from a high-tech material, features remarkable decoration in keeping with the highest standards of fine watchmaking. The hand-crafted adornment of each component, from the exterior to the movement, is part of the rare crafts lovingly preserved by Jaeger-LeCoultre. <br \/><br \/>Original complications with further enhanced performances Entirely dedicated to watches with a double complication, the Master Grande Tradition line fully reflects the inventiveness and excellence of the Grande Maison in the Vall\u00e9e de Joux. The appearance of a new star in the Jaeger-LeCoultre watchmaking firmament deserved to be underscored by a selection of unusual and emblematic complications. The first model in the collection thus associates a tourbillon and a perpetual calendar, while the minute repeater model is the only one to have a two-week power reserve combined with a regulator display. <br \/><br \/>Beneath their classic horological appearance, the two timepieces boast a fabulous set of assets in terms of reliability and precision, expressing a level that is the exclusive preserve of technologically avant-garde creations. These watches are the result of years of research conducted in the field of sound, the choice of materials and manufacturing methods, and they are living proof that one can attain an even higher level of precision without compromising the level of finish of the individual parts. It is therefore hardly surprising that the production of each of these exceptional timepieces represents a constant challenge, since each movement comprises over 400 parts. Due to the sheer complexity of the task, a single watchmaker handles the assembly, adjustment and casing up of each watch. Governed by the quest for ultimate precision, this modus operandi makes each movement truly one of a kind.<br \/><br \/>Jaeger-LeCoultre Calibre 947R: a minute repeater and a two-week power reserve <br \/><br \/>Above and beyond the extraordinary characteristics that have already propelled Jaeger-LeCoultre Calibre 947 to the rank of a truly exceptional watch mechanism, the new Calibre 947R is the first Jaeger-LeCoultre movement to associate a minute repeater with a regulator-type display. In 2005, the launch of Calibre 947 had caused a sensation, with its patented crystal gong that represents a major breakthrough in the field of sound. The gong heel was welded to the sapphire crystal in order to draw full advantage from the celerity properties of sapphire crystal and thus increase the intensity and purity of the sound vibration emitted. Meanwhile, the gongs were made from a secret-formula material that was and remains exclusive to Jaeger-LeCoultre. <br \/><br \/>Nonetheless, since any discovery \u2013 however revolutionary \u2013 emerging at Jaeger-LeCoultre is necessarily subject to subsequent improvements, all manner of technical innovations have been added to this calibre which is continuing to write history in terms of the use of sound in watchmaking. The section of the gongs has since adopted a progressive shape, tapered towards the end in order to increase the duration of the sound. Moreover, this section now also features a square appearance in order to intensify the sound volume by a better strike of the hammer. Finally, the all-of-a-piece construction of the gong and its heel serves to reduce the losses in energy and thus to improve the propagation of the sound. <br \/><br \/>Endowed with an exceptional two-week power reserve, the Master Grande Tradition \u00e0 R\u00e9p\u00e9tition Minutes undoubtedly deserved a face to match its remarkable musical properties. In order to grace it with this classical originality, the designers of the Grande Maison have drawn inspiration from the typical layout of the former reference clocks, known as regulators. Formerly used to check the rate of watches, regulators were distinguished by their dial featuring the two main hands positioned on separate axes in order to guarantee precision and facilitate minute read-off. This system enables the time indicators to pursue their respective path in a perfectly independent manner and eliminates any potential sources of friction or contact, which represent potential hindrances to the smooth running of the watch mechanism. The regulator display remains to this day a complication reserved for particularly high-precision watches. <br \/><br \/>This Master Grande Tradition is the only watch to combine a minute repeater with a two-week power reserve and a crystal gong. This model also features an exceptionally refined and understated presentation of the information. The small seconds at 6 o\u2019clock provides the additional accuracy required by modern daily life, while the hours glide around a subdial at 12 o\u2019clock and the minutes are displayed by a central hand. Located between 7 and 8 o\u2019clock, the power reserve echoes the barrel torque indicator placed opposite between 4 and 5 o\u2019clock. In an ultimate touch of sophistication, the two minute repeater hammers are visible through a dial opening at 4 o\u2019clock, each bearing the inscription \u201cMINUTE\u201d or \u201cHEURE\u201d, depending on which gong they strike. <br \/><br \/>A tribute to the grand horological tradition <br \/><br \/>The peerlessly refined characteristics of the models in the Master Grande Tradition collection are, as their name implies, a tribute to the grand watchmaking tradition. A new case, meticulously crafted exclusively from precious materials, symbolises the art of decoration inherent to exceptional creations: the designers of the Manufacture have managed to create a play on contrasts between polished and smoothed surfaces to further enliven the face of the watch. The flanks are smoothed, while the upper part of the lugs and the case-back are polished. The rounded polished bezel accentuates the technical appearance of the line and the finely fluted crown is distinguished by a face adorned with a polished JL logo. This concern for detail is echoed in the proportions of the case and the design of the new dials accentuated by the alliance between originality and respect for traditional values. The new dial style will be a key signature feature of the creations in the Master Grande Tradition line, thanks to the systematic alternation of surfaces graced with a velvet-finish or Clous de Paris hobnail guilloch\u00e9 motif. The dauphine hands underscore the classical style of the watches featuring a chapter ring bearing hand-applied hour-markers rather than numerals. <br \/><br \/>An expert in traditional skills, the Manufacture Jaeger-LeCoultre has kept alive for the past 175 years a range of time-honoured decorative techniques, some of which had at one point appeared doomed to extinction. Nonetheless, the constant innovations developed in the laboratories of the Manufacture require the decoration specialists to display constantly renewed inventiveness in the application of these methods, which quite obviously existed well before the use of high-tech materials came into play. This makes the exercise of these arts a perpetual challenge, vividly embodied in the titanium models. While the extreme lightness of this material is a favourable factor in enhancing their precision, its structure nonetheless makes it extremely hard to work with. <br \/><br \/>Refined ornamentation for exceptional models <br \/><br \/>Each component is designed and decorated so as to form an horological work of art illustrating the dexterity, the know-how and the virtuosity of the decorative workshops within the Manufacture. The surfaces are decorated with Clous de Paris, double \u201cc\u00f4tes soleill\u00e9es\u201d, circular graining, double snailing, or simply satin-brushed to accentuate the graphic strength of these splendid models. The balance-cock of the Master Grande Tradition \u00e0 R\u00e9p\u00e9tition Minutes is hand-engraved, while the 22-carat gold oscillating weight is graced with a three-dimensional Clous de Paris motif and the unique tourbillon bridge is entirely hand decorated. All the steel parts are smoothed and bevelled, while the bridges and mainplate, made from non-treated nickel silver for the R\u00e9p\u00e9tition Minutes version, feature hand-drawn edges as well as raised and polished angles. The adjustment screws are blued and the chaton screws are rhodium-plated, in harmony with the traditions of the array of otherwise rare crafts still practiced at Jaeger-LeCoultre.<br \/><br \/>Representing an authentic coalition between an extraordinary horological heritage and an irresistibly innovative spirit, the two inaugural creations of the Master Grande Tradition line prefigure the destiny of this collection that is writing a new chapter in the history of the Manufacture. They shape the contours of an unprecedented reality in which beauty sculpts time, imbued with the harmony between noble materials and ornamental refinements, between technical sophistication and artistic creativity, in order to celebrate through timekeepers the eternal elegance of the passing hours and days.<\/p>","description_short":"","quantity":0,"minimal_quantity":"1","available_now":"","available_later":"","price":197500,"specificPrice":false,"additional_shipping_cost":"0.00","wholesale_price":"0.000000","on_sale":"0","online_only":"0","unity":"","unit_price":0,"unit_price_ratio":"0.000000","ecotax":"0.000000","reference":"Q5011410","supplier_reference":"","location":"","width":"0.000000","height":"0.000000","depth":"0.000000","weight":"0.000000","ean13":"","upc":"","link_rewrite":"master-grande-tradition-a-repetition-minutes","meta_description":"In 2009, the Grande Maison in the Vall\u00e9e de Joux is unveiling some extraordinary timepieces embodying an original symbiosis between the technological breakth...","meta_keywords":"","meta_title":"Watch Jaeger-LeCoultre Master Grande Tradition \u00e0 R\u00e9p\u00e9tition Minutes | Master Grande Tradition Q5011410  Yellow gold","quantity_discount":"0","customizable":"0","new":false,"uploadable_files":"0","text_fields":"0","active":"1","redirect_type":"404","id_product_redirected":"0","available_for_order":"0","available_date":"0000-00-00","condition":"new","show_price":"1","indexed":"1","visibility":"both","date_add":"2015-08-04 01:05:46","date_upd":"2015-10-20 15:08:12","tags":false,"base_price":"197500.000000","id_tax_rules_group":"1","id_color_default":0,"advanced_stock_management":"0","out_of_stock":0,"depends_on_stock":false,"isFullyLoaded":true,"cache_is_pack":"0","cache_has_attachments":"1","is_virtual":"0","id_pack_product_attribute":null,"cache_default_attribute":"0","category":"master-grande-tradition","pack_stock_type":"3","id":72,"id_shop_list":null,"force_id":false,"customization_required":false}

{"Compl\u00e9ment":"Yellow gold","Statut de vente":"N est plus commercialis\u00e9","Date":"2009","Pi\u00e8ce unique":"No","S\u00e9rie limit\u00e9e":"Oui","Nombre d exemplaire":"100","Sexe":"Unisexe","Gaucher":"No","Diam\u00e8tre":"44","Types":"Hand-winding","Styles":"High Horology","Calibre_autre":"Jaeger-LeCoultre 947R","Calibre distinction":"Hand-engraved, Circular Graining, Hand decorated, Hand engraved","Affichage_autre":"Dauphine-shaped hands","Complication":"Power Reserve Indicator, Torque Indicator, Minute Repeater, Regulator","Mati\u00e8re du bo\u00eetier":"Yellow gold","Particularit\u00e9 du boitier":"Sapphire caseback","Particularit\u00e9 du boitier_autre":"With lens","Etanch\u00e9it\u00e9":"50 meters","Forme":"Round","Cadran":"Hand engraved","Couleur du cadran":"White","Index":"Triangles, Dots, Arabic numerals","Mati\u00e8re du bracelet":"Alligator leather","Fermeture du bracelet":"Folding buckle ","Couleur du bracelet":"Black","Plus de caract\u00e9ristiques":"Movement <br \/>Crafted. assembled and decorated by hand <br \/>413 parts <br \/> 45 jewels <br \/> 9.60 mm thick <br \/> Silicon escapement<br \/>Frequency : <br \/>21 600 vibrations per hour <br \/>two-week power reserve <br \/>22-carat gold oscillating weight graced with a three-dimensional <br \/>Clous de Paris motif <br \/>Bridges made from non-treated <br \/>nickel silver<br \/>Rhodium-plated chaton screws<br \/>Blued adjustment screws <br \/><br \/>18-carats yellow gold case and buckle <br \/>Velvet-finished dial. one part adorned with a Clous de Paris hobnail motif and featuring applied 18 carat gilded hour-markers and logo"}

Master Grande Tradition à Répétition Minutes

Reference: Q5011410

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Brand  :	Jaeger-LeCoultre
Collection  :	Master Grande Tradition
Model  :	Master Grande Tradition à Répétition Minutes
Reference  :	Q5011410
Nber of pieces :	100
Complement :	Yellow gold
Year :	2009
Is not commercialised any more

237 000 €Recorded list price in FranceI WANT ITADD TO CART

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• Brand  :	Jaeger-LeCoultre
  Collection  :	Master Grande Tradition
  Model  :	Master Grande Tradition à Répétition Minutes
  Reference  :	Q5011410
  Nber of pieces :	100
  Complement :	Yellow gold
  Year :	2009
  Is not commercialised any more
  List Price :	237 000 €
  Diameter :	44 mm
  Styles :	High Horology
  Types :	Hand-winding
  Calibre :	Jaeger-LeCoultre 947R
  Calibre distinction :	Hand-engraved Circular Graining Hand decorated Hand engraved
  Complication :	Power Reserve Indicator Torque Indicator Minute Repeater Regulator
  Case material :	Yellow gold
  Case peculiarity :	Sapphire caseback With lens
  Shape :	Round
  Water-resistance :	50 meters
  Dial :	Hand engraved
  Dial color :	White
  Display :	Dauphine-shaped hands
  Indexes :	Triangles Dots Arabic numerals
  Strap material :	Alligator leather
  Strap color :	Black
  Strap clasp :	Folding buckle
  + More characteristics :	Movement Crafted. assembled and decorated by hand 413 parts 45 jewels 9.60 mm thick Silicon escapement Frequency : 21 600 vibrations per hour two-week power reserve 22-carat gold oscillating weight graced with a three-dimensional Clous de Paris motif Bridges made from non-treated nickel silver Rhodium-plated chaton screws Blued adjustment screws 18-carats yellow gold case and buckle Velvet-finished dial. one part adorned with a Clous de Paris hobnail motif and featuring applied 18 carat gilded hour-markers and logo

DESCRIPTION

• In 2009, the Grande Maison in the Vallée de Joux is unveiling some extraordinary timepieces embodying an original symbiosis between the technological breakthroughs of the 21st century and a tribute paid to the finest watchmaking traditions.
  
  The design and creation of such a masterpiece naturally depends on the authentic mastery of the intricacies of fine watchmaking, a mastery that Jaeger-LeCoultre has been cultivating for 176 years. The new line is distinguished by distinctive aesthetics and the joint presence on each model of two complications interpreted in a manner that is at once historical and innovative. The two first watch creations in the Master Grande Tradition collection feature combinations of functions that are new to the Manufacture: on the one hand, the first tourbillon associated with a perpetual calendar; and on the other, the first minute repeater with a two-week power reserve allied with a regulator display. Moreover, this new line will welcome the first ever silicon escapement from the Grande Maison, stemming from the research undertaken in the Jaeger-LeCoultre laboratories and aiming to further enhance the performances of this complicated timepiece. This major innovation will initially enrich the yellow gold limited editions only. The undeniable gain in precision will be certified by a new “1000 Hours Chrono” label developed by Jaeger-LeCoultre. Two limited series in yellow gold equipped with a silicon escapement, testifying to the ongoing quest for absolute precision.
  
  Two limited series in yellow gold equipped with a silicon escapement, testifying to the ongoing quest for absolute precision.
  The materials in which the two models in the Master Grande Tradition line will be issued include yellow gold. The specific feature of these two yellow gold models is that they house an innovative silicon escapement and that they are presented in limited series (300 for the tourbillon perpetual calendar model; and 100 for the minute repeater regulator model).
  
  Silicon is not in itself entirely new to Jaeger-LeCoultre, since this material was already used in the revolutionary Master Compressor Extreme LAB, the first ever totally lubricant-free watch. After this landmark event, and in pursuing its constant quest for ultimate precision, Jaeger-LeCoultre has developed a new silicon escapement for the Master Grande Tradition, featuring a lever wheel and lever made from this high-tech material. Silicon boasts several key assets. First of all, it is an extremely hard material that is very resistant to wear and can thus be used without oil. Its excellent friction coefficient also considerably reduces rubbing within the movement. Its ultra-light weight translates into enhanced inertia, which in turn has a favourable effect on efficiency. Moreover, silicon manufacturing technologies enable the production of complex parts with shapes that are incomparably accurate compared with those in steel. This newfound flexibility in determining the geometry of the components makes it possible to produce openworked or hollowed structures with a lower moment of inertia in order to increase the energy transmitted to the balance. Silicon also offers the possibility of making single-block parts such as a lever with integrated pallets, which are more accurate by their very construction.
  
  After considerable experimentation, Jaeger-LeCoultre has decided to cover the silicon parts with a diamond coating. Silicon is usually protected by a layer of silicon oxide (SiO2) to prevent the formation of fissures when the parts are handled. Nonetheless, friction and the wear of SiO2 against SiO2,, such as the lever against the escape-wheel, do not yield particularly remarkable results in tribological terms, since they are lower than those achieved by classic lubricated materials. This means a large proportion of what is gained by using silicon, such as a reduction in weight and a higher production precision, is in fact wasted because of an unfavourable friction coefficient.
  
  Applying a diamond coating – the solution chosen by Jaeger-LeCoultre – affords enhanced protection against fissures than SiO2, but most of all offers vastly improved tribological results. Once plasma polished, the diamond nanocrystals are extremely smooth and hard. This process serves to achieve peerless resistance to wear and a friction coefficient equivalent to half that of SiO2. In this respect, a comparison of the friction coefficients is sufficiently eloquent: 0.08 between diamond and diamond, 0.16 between SiO2 and SiO2 and 0.13 between steel and ruby. The use of diamond-coated silicon for the escapement thereby increases the movement efficiency by 15%, a net 5.5-point gain. The inertia of the components is in fact divided by three, the manufacturing accuracy reduces backlash, while the losses due to friction are also considerably reduced.
  
  A new “1000 Hours Chrono” label
  
  In order to guarantee the precision that their avant-garde escapement contributes to these exceptional models, Jaeger-LeCoultre has chosen to reinforce its famous “1000 Hours” test. This extremely stringent set of tests currently serves to guarantee watches from the Grande Maison in terms of their water resistance, their shock resistance, their power reserve, their smooth operation in real wearing conditions, and of course their precision. Especially for the Master Grande Tradition watches equipped with a silicon escapement, this protocol is now complemented by a battery of tests, modelled on those performed by the Swiss Official Chronometer Testing Institute (COSC), with a view to granting a certificate testifying to an extremely high degree of precision. The difference between these tests and those conducted by the COSC lies in the fact that Jaeger-LeCoultre will test the precision not only of the movements without their complications, but – in keeping with the brand philosophy – that of the finished watches. Based on this procedure, the Master Grande Tradition watches equipped with a silicon escapement will thus be awarded the “1000 Hours Chrono” quality label. A final important detail: to encourage the fortunate owner of a Master Grande Tradition watch to attempt to grasp the secrets of silicon escapement, the sapphire crystal of the two yellow gold models features an integrated magnifying glass providing an enlarged view of this high-tech marvel.
  
  A new line: two new movements
  
  The new design of these models is distinguished by a blend of purity and refinement, featuring a style that stands out from the current collections in order to underscore the exceptional association of complications embodying major horological feats. The cases are crafted in precious materials only, while the watch dial is surrounded by a finely curved bezel and the finishing testifies to the care lavished on even the smallest details. The extraordinary diversity of the skills mastered within the Manufacture is essential to ensuring that each part, even if it is made from a high-tech material, features remarkable decoration in keeping with the highest standards of fine watchmaking. The hand-crafted adornment of each component, from the exterior to the movement, is part of the rare crafts lovingly preserved by Jaeger-LeCoultre.
  
  Original complications with further enhanced performances Entirely dedicated to watches with a double complication, the Master Grande Tradition line fully reflects the inventiveness and excellence of the Grande Maison in the Vallée de Joux. The appearance of a new star in the Jaeger-LeCoultre watchmaking firmament deserved to be underscored by a selection of unusual and emblematic complications. The first model in the collection thus associates a tourbillon and a perpetual calendar, while the minute repeater model is the only one to have a two-week power reserve combined with a regulator display.
  
  Beneath their classic horological appearance, the two timepieces boast a fabulous set of assets in terms of reliability and precision, expressing a level that is the exclusive preserve of technologically avant-garde creations. These watches are the result of years of research conducted in the field of sound, the choice of materials and manufacturing methods, and they are living proof that one can attain an even higher level of precision without compromising the level of finish of the individual parts. It is therefore hardly surprising that the production of each of these exceptional timepieces represents a constant challenge, since each movement comprises over 400 parts. Due to the sheer complexity of the task, a single watchmaker handles the assembly, adjustment and casing up of each watch. Governed by the quest for ultimate precision, this modus operandi makes each movement truly one of a kind.
  
  Jaeger-LeCoultre Calibre 947R: a minute repeater and a two-week power reserve
  
  Above and beyond the extraordinary characteristics that have already propelled Jaeger-LeCoultre Calibre 947 to the rank of a truly exceptional watch mechanism, the new Calibre 947R is the first Jaeger-LeCoultre movement to associate a minute repeater with a regulator-type display. In 2005, the launch of Calibre 947 had caused a sensation, with its patented crystal gong that represents a major breakthrough in the field of sound. The gong heel was welded to the sapphire crystal in order to draw full advantage from the celerity properties of sapphire crystal and thus increase the intensity and purity of the sound vibration emitted. Meanwhile, the gongs were made from a secret-formula material that was and remains exclusive to Jaeger-LeCoultre.
  
  Nonetheless, since any discovery – however revolutionary – emerging at Jaeger-LeCoultre is necessarily subject to subsequent improvements, all manner of technical innovations have been added to this calibre which is continuing to write history in terms of the use of sound in watchmaking. The section of the gongs has since adopted a progressive shape, tapered towards the end in order to increase the duration of the sound. Moreover, this section now also features a square appearance in order to intensify the sound volume by a better strike of the hammer. Finally, the all-of-a-piece construction of the gong and its heel serves to reduce the losses in energy and thus to improve the propagation of the sound.
  
  Endowed with an exceptional two-week power reserve, the Master Grande Tradition à Répétition Minutes undoubtedly deserved a face to match its remarkable musical properties. In order to grace it with this classical originality, the designers of the Grande Maison have drawn inspiration from the typical layout of the former reference clocks, known as regulators. Formerly used to check the rate of watches, regulators were distinguished by their dial featuring the two main hands positioned on separate axes in order to guarantee precision and facilitate minute read-off. This system enables the time indicators to pursue their respective path in a perfectly independent manner and eliminates any potential sources of friction or contact, which represent potential hindrances to the smooth running of the watch mechanism. The regulator display remains to this day a complication reserved for particularly high-precision watches.
  
  This Master Grande Tradition is the only watch to combine a minute repeater with a two-week power reserve and a crystal gong. This model also features an exceptionally refined and understated presentation of the information. The small seconds at 6 o’clock provides the additional accuracy required by modern daily life, while the hours glide around a subdial at 12 o’clock and the minutes are displayed by a central hand. Located between 7 and 8 o’clock, the power reserve echoes the barrel torque indicator placed opposite between 4 and 5 o’clock. In an ultimate touch of sophistication, the two minute repeater hammers are visible through a dial opening at 4 o’clock, each bearing the inscription “MINUTE” or “HEURE”, depending on which gong they strike.
  
  A tribute to the grand horological tradition
  
  The peerlessly refined characteristics of the models in the Master Grande Tradition collection are, as their name implies, a tribute to the grand watchmaking tradition. A new case, meticulously crafted exclusively from precious materials, symbolises the art of decoration inherent to exceptional creations: the designers of the Manufacture have managed to create a play on contrasts between polished and smoothed surfaces to further enliven the face of the watch. The flanks are smoothed, while the upper part of the lugs and the case-back are polished. The rounded polished bezel accentuates the technical appearance of the line and the finely fluted crown is distinguished by a face adorned with a polished JL logo. This concern for detail is echoed in the proportions of the case and the design of the new dials accentuated by the alliance between originality and respect for traditional values. The new dial style will be a key signature feature of the creations in the Master Grande Tradition line, thanks to the systematic alternation of surfaces graced with a velvet-finish or Clous de Paris hobnail guilloché motif. The dauphine hands underscore the classical style of the watches featuring a chapter ring bearing hand-applied hour-markers rather than numerals.
  
  An expert in traditional skills, the Manufacture Jaeger-LeCoultre has kept alive for the past 175 years a range of time-honoured decorative techniques, some of which had at one point appeared doomed to extinction. Nonetheless, the constant innovations developed in the laboratories of the Manufacture require the decoration specialists to display constantly renewed inventiveness in the application of these methods, which quite obviously existed well before the use of high-tech materials came into play. This makes the exercise of these arts a perpetual challenge, vividly embodied in the titanium models. While the extreme lightness of this material is a favourable factor in enhancing their precision, its structure nonetheless makes it extremely hard to work with.
  
  Refined ornamentation for exceptional models
  
  Each component is designed and decorated so as to form an horological work of art illustrating the dexterity, the know-how and the virtuosity of the decorative workshops within the Manufacture. The surfaces are decorated with Clous de Paris, double “côtes soleillées”, circular graining, double snailing, or simply satin-brushed to accentuate the graphic strength of these splendid models. The balance-cock of the Master Grande Tradition à Répétition Minutes is hand-engraved, while the 22-carat gold oscillating weight is graced with a three-dimensional Clous de Paris motif and the unique tourbillon bridge is entirely hand decorated. All the steel parts are smoothed and bevelled, while the bridges and mainplate, made from non-treated nickel silver for the Répétition Minutes version, feature hand-drawn edges as well as raised and polished angles. The adjustment screws are blued and the chaton screws are rhodium-plated, in harmony with the traditions of the array of otherwise rare crafts still practiced at Jaeger-LeCoultre.
  
  Representing an authentic coalition between an extraordinary horological heritage and an irresistibly innovative spirit, the two inaugural creations of the Master Grande Tradition line prefigure the destiny of this collection that is writing a new chapter in the history of the Manufacture. They shape the contours of an unprecedented reality in which beauty sculpts time, imbued with the harmony between noble materials and ornamental refinements, between technical sophistication and artistic creativity, in order to celebrate through timekeepers the eternal elegance of the passing hours and days.