Month: October 2015

Explore How Expensive The Tourbillon Is: Big Brands Are Moving 3 Million

Tourbillon watches represent the highest level of mechanical watch manufacturing technology. The entire escapement speed control system operates in a unique way, bringing the dynamic artistic beauty of clocks to the highest level, and has always been known as ‘the watch’ s King’. The same watch, with tourbillon, is ten times more expensive at once. It usually ranges from hundreds of thousands to millions. First-line big tourbillon 辄 3 million yuan
The tourbillon watch represents the highest level of mechanical watch manufacturing technology. The entire escapement speed control system operates in a unique way, bringing the dynamic artistic beauty of the watch to the highest level, and has always been known as the ‘king of watches’. The same watch, with tourbillon, is ten times more expensive at once. It usually ranges from hundreds of thousands to millions. Tourbillons like Patek Philippe and Vacheron Constantin are generally above 3 million. Of course, there are also people-friendly prices, and some tourbillons in China sell for less than 8,000 yuan, making this micro-engineering miracle easier than ever. Patek Philippe’s 5016 is a landmark masterpiece of watchmaking. It has 506 tiny parts and contains the most super complicated functions in a gold or platinum case: tourbillon, three questions, automatic flyback date pointer perpetual calendar, and month. Phase display. The actual price is divided, but it is unified between 470,000 euros to 600,000 euros. A rose gold 5016 in 2007 was auctioned in Hong Kong at 5,013,500 Hong Kong dollars, and it is not available with money, depending on the VIP level … For most watch fans, they are just legendary fantasy watches . Patek Philippe’s advanced complication series 5207 platinum watch, advanced complication watch with instant jump perpetual calendar, minute repeater and tourbillon. The instant jump perpetual calendar display window can display the week, date, month and leap year cycle, which is the most complicated wrist One of the tables, only a few pieces are produced each year, and the market conservative valuation is 6 million yuan.
一 Once a watch has a tourbillon, the price will definitely rise, but what exactly is a concept? What is the price of the most expensive tourbillon watch? What is the general price of the tourbillon? What is the cheapest tourbillon? Jaeger-LeCoultre’s only platinum high-jewellery spherical tourbillon watch tailored specifically for the Jaeger-LeCoultre flagship store in Beijing’s Financial Street is priced at RMB 12,735,000, the only one in the world. This watch uses Jaeger-LeCoultre’s spherical tourbillon, which completely breaks through the traditional tourbillon structure. Two tourbillon frames rotate around two different axes, allowing the watch to be at any angle and position. Can effectively offset the effect of gravity on its travel time. In terms of design, this watch is also a classic, using noble all platinum material, large diamonds are set on the case and bracelet, the number is 459, and the total weight is nearly 59 carats. The watchmaker also uses special materials to create a spherical tourbillon device, and uses advanced transparent glass to show the superb time error fixed gears above the dial, as well as the unique arc-shaped perpetual calendar date display. Avant-garde style. Below the dial, the design is simple, showing the beauty of the tourbillon, the perpetual calendar and the eight-day long power reserve display are not overwhelming. Itabashi is sculpted with metal filaments, letting people see the dial at a glance, admiring the balance wheel and escapement in the spherical tourbillon. The back is equipped with a transparent sapphire crystal, which presents a wonderful retrograde leap year display, making the entire watch impeccable.
Think of Hermes’ clothing or bags as expensive, but the brand also began to explore in the professional field. Cape Cod Tourbillon watch, the movement is a Hermès H8930VMF manual winding tourbillon mechanical movement. Equipped with a dual barrel device, the power reserve can be up to 7 days. The movement consists of 237 components, including 30 gems and hand-finished splints and parts, decorated with Hermes’ special H logo. This tourbillon features two revolutions per minute in the case, a silver or charcoal grey dial, and an elegant barrel-shaped case in 18K rose or white gold. The watch uses anti-reflective sapphire crystal mirror and case back, and matte light brown or black alligator leather strap, showing the artist’s aesthetic style. The price of this watch is 1,378,000 yuan.
Vacheron Constantin Malta Tourbillon High Jewellery Watch
(The designer’s Maltese tourbillon high jewelry watch is transformed into a diamond stacking design, which makes people look at a glance. The cutter cuts diamonds into micrometers, so that the jewelry inlayer can These diamonds are perfectly set in their design. To accomplish this difficult task requires strict precision, and it takes more than 2,000 hours of careful work to create this amazing combination of diamonds.)
The Tour de l’Ile of Qujiang Constanton costs up to 12 million yuan. This watch has a dual dial. On the front dial, the 60-second tourbillon is at 6 o’clock. The watch has complex functions, such as the minute repeater, perpetual calendar, moon phases, power reserve, astronomical time difference, etc. It is the most complicated watch in the world, with only a limited production of 7 watches worldwide. Frank Mueller also sold a Mega 4 for 10 million yuan. Now the world’s most expensive tourbillon may be Piaget’s Emperador series ‘Diamond Palace’. Model G0A32146, 18K white gold, set with 1,211 diamonds, totaling 97 carats, a one-minute flying tourbillon, limited to one, has been sold, 150 million Taiwan dollars, about 32 million yuan. It has two layers, the upper layer is an electronic watch, and the lower layer is a mechanical watch. Although some people doubt that the added value of the diamond is much greater than the value of the tourbillon itself, it must be known that setting the gem itself is a very difficult process, no less than the polishing of the movement.
Blancpain Custom Diamond Tourbillon
(The brand’s original ‘Baguette’ diamond setting technology sets rectangular diamonds on the watch with exquisite craftsmanship. With its unparalleled advanced jewelry setting technology and seven-day power reserve self-winding 25A movement, it shows a high-level The pinnacle of custom jewellery and haute couture.)
Entry-level tourbillon more than 300,000
Of course, the high price of these tourbillon watches is just a special case. Not every tourbillon can reach the same scary price. But in general, watches with tourbillon performance cost hundreds of thousands to millions. A. Lange & Shne Cabaret tourbillon reference price 2 million yuan, Earl Tourbillon Relatif enamel painted relative tourbillon price 4.68 million, Audemars Piguet Royal Oak carbon concept tourbillon chronograph is relatively low, but It also reached 370,000 yuan. The price of wristwatches has been on the rise in recent years. In China, world-renowned watches from first- and second-tier brands will increase their prices at least once a year, and most will choose March or April. The increase is generally controlled within 10%. The biggest reason is It is the appreciation and preservation of name watches.
Domestic tourbillons within 100,000 yuan
The particularity of the tourbillon watch just makes it a hot item in the collection, which provides a sufficient guarantee for the soaring price of the tourbillon. However, as far as the tourbillon in the international market is concerned, the price is characterized by a large difference between the high-end and low-end regions. Tourbillon watches from top watch manufacturers in Switzerland generally sell for hundreds of thousands to millions. With more fine craftsmanship, strict technical standards and the connotation of the watch factory’s own brands, these watches occupy the high-end market . Correspondingly, the price of domestic tourbillons is much lower than the Swiss brand. Although there is not much difference in function, the price is generally within 100,000. In any case, the price of tourbillon watches is always higher than ordinary watches, which has been proven by the market.


I Want You! I Took The ‘good Sound’ Watch Instructor Addiction

Machinery is perceptible, sound is perceptible, and time is audible. People who love watches, like to listen to the crisp ticking sound of the escapement and feel the flow of time in the dead of night, this is a kind of listening. The other is the wonderful timekeeping sound of the minute repeater. You will sincerely sigh that the mechanical technology is too amazing. Cheaper watches may sound slightly turbulent and cluttered, and millions of minute repeaters are bound to have a ringing pattern that is crisp, clear and memorable. On the stage of ‘Good Voice in China’, four mentors look for good voices in China for everyone. In the field of clocks, the Watch House looks for good voices in watches for everyone. Now, let us choose you as a mentor. Watch ‘good voice’ in your heart, say ‘IWANTYOU’ aloud!

Functional analysis:

  The minute repeater (minuterepeater), which is a three-reed watch, has three different spring sounds. It can distinguish the time of ‘hour’, ‘engraved’ and ‘minute’, which is the result of clever use of acoustics and dynamics. Turn the dial of the minute repeater, it will continuously emit a pleasant tone. The low-pitched tone is a time signal, for example: ‘Dang, Dang, Dang’, and 3 rings is 3 o’clock. Followed by the engraving, usually with high and low bass, for example: ‘Ding-Dong, Ding-Dong’, that is, 2 minutes (30 minutes). Next, the high-pitched tone is scored, for example: ‘Ding, Ding, Ding, Ding, Ding’, 5 rings is 5 minutes, then the time is 3:35.
  Three questions, like tourbillons and perpetual calendars, are a complex function of mechanical watches and one of the biggest challenges in mechanical watchmaking: adding a reed device for timekeeping in a limited space, sometimes for melodious sound, but also To install three or more sets of hammer springs, many parts are as thin as hair.

  Before electricity was invented, the questionnaire that could “hear” the time in the dark was quite practical. Now, the function of three questions has become a way for watchmakers to show off their skills. Minute repeater’s chain spring first uses the vertical movement of the trigger to accumulate the energy required for reporting. At the same time, the hour, quarter-hour and minute gears have been wound and ready to enter the time position. When starting, the energy released by the chain spring is supplied to the speed regulator, which operates according to the principle of centrifugal force to keep the hammer striking rate constant. The two hammers hit the bass, treble and treble bass respectively. .

Introduction of classic watches

  Patek Philippe 3939 and 5539 tourbillon

  Patek Philippe is best known for its grand and solemn ‘bells of Westminster Cathedral.’ Most of the minute repeater sounds with a double hammer to strike the double spring structure, but there are also three sets or more Minute repeater, this kind of repeater has a richer tone change, which is called “Zhongle repeater”. The leader in the Zhongle question table is the four-hammer and three-question Westminster Zhongle timepiece. It can simulate the sound of the clock of the Westminster Cathedral through the rhythm of the four hammers and gongs.

  The Patek Philippe 3939 Tourbillon watch will be the last Ref. 3939 watch made by Patek Philippe in Geneva. It is of extraordinary significance and is generally recognized as the ‘king of three questions’ by watch fans. Its exterior is extremely low-key and simple, but inside it contains the complex craftsmanship of the minute repeater and tourbillon of the church bells of Westminster. It is indeed a low-key aristocracy. On September 23, 2011, at the biennial OnlyWatch auction, Patek Philippe’s stainless steel case 3939 won the ‘bid king’ of this charity auction with an absolute advantage of 1.4 million euros (about 12.1 million yuan). It is not limited to Patek Philippe. Even in the entire watchmaking industry, if it can be called a ‘Tianwang class’ watch, 3939 will definitely be elected as an example.

  Patek Philippe Ref. 3939 is considered to be the most collectible watch of the brand Tourbillon Minute Repeater, and the sound in the Minute Repeater is also its best. The following 5339 and 5539 are based on this design, adding or reducing external Elements to reflect different styles, but the movement has not changed.

  This 5539G is different from the 3939 in terms of pointer design and lugs. The slight changes make it more retro. The black enamel dial with Breguet numerals and small seconds at 6 o’clock shows a strong nostalgia. From the dial ‘TOURBILLON’ we can know that the watch also has a tourbillon device. The watch is equipped with RTO27PS manual winding mechanical movement, with minute repeater and tourbillon escapement system. When you push the minute repeater on the left-hand side, you can hear the unique and unique timekeeping sound, which is exciting. Assuming the time is 3:34, the watch sounds the hour with the bass reed ‘咚-咚-咚’, the quarter bell with the high and low bass reed of ‘Ding-Ding-Dong’, and the ‘Ding-Ding’ -Ding-Ding ‘tweeter sounds the minute.

  Blancpain LeBrassus Carousel Minute Repeat Flyback Chronograph

  When mentioning Blancpain’s minute repeater, perhaps the most noticeable for men is Blancpain’s spring repeater minute repeater, which engraved the figure of the Spring Palace vividly on the back of the watch. With the sound of the questionnaire, the characters began to spring. Rippling, which combines visual and auditory art, brings a natural spiritual joy to the collector. In addition, I prefer another LeBrassus series Carrousel Minute Repeater chronograph.

  This watch is eye-catching with delicate carvings. The round case made of rose gold highlights the nobility. Through the sapphire glass mirror, you can clearly appreciate the beauty of the movement. The elegant rose gold hands are matched with the classic Roman scale, simple but not simple. Blancpain put a lot of effort into the development of the timekeeping mechanism to make the timepiece clear and pleasant. Different from the ordinary ordinary reeds, the church reeds used by Blancpain surround the movement one and a half times, making the sound fuller. The gong, which is bent into a steel ring shape, is welded to the block base without any flaws, and is perfectly combined with the movement to maintain an absolute horizontal position, thereby presenting a clear, pleasing, perfect sound of the time signal. In order to ensure the clarity of the time signal, Blancpain has also made a technical innovation in the new model, which is to add a suspension regulator to reduce the background noise caused by the movement.

  Breguet’s new ClassiqueLaMusicale7800 watch

  The LaMusicale music watch in the Breguet Classique series is not only comparable to art, it also carries all the values ​​of Breguet’s watchmaking. Today, Breguet has released a new music watch, which repays the love of watch fans with extraordinary skills. This masterpiece of art is not just about measuring time. It is equipped with a patented musical device and can perform charming movements.

Breguet’s new ClassiqueLaMusicale7800 watch is made of rose gold to create a 48mm case with artificially carved patterns. At the same time, the frame is also engraved with exquisite clef symbols, delineating the beauty of the watch’s musical rhythm. When the music button at 10 o’clock is activated, at the preset time, the watch will sound the B-minus ‘Harmony’-the last chapter of the Bach 2 orchestral suite. The ingenious stop mechanism developed by the Breguet watchmaker ensures that the music can be played completely every time. Once the music sounded, the center ‘music record’ began to rotate for a week. When it was rotated to 20-25 seconds, the engraved disc surface flashed dazzling colors, its marvelous and amazing, indulged in the hall of art.

  Like the previous music watch, Breguet equips the 7800 with a sophisticated case made of resonance wood. Resonant spruce is one of the basic materials for making vibrating membranes for stringed instruments. In addition, these spruce are taken from the Risoud Forest in Joux Valley, the hometown of Breguet, making the melody released by music watches even more unusual.

  Piaget King Pillow Slim Automatic Minute Repeater

  Piaget Emperador Emperador Pillow Slim Automatic Minute Repeater Movement with a thickness of 4.8mm and a case thickness of 9.4mm. It is Piaget’s first minute repeater, and it is also the fourth large complex watch developed and produced by Piaget. . In order to give the movement a unique timekeeping sound, and at the same time to maintain its high quality in timing, Piaget Watchmaking Workshop developed a 1290P movement in the process of making the Emperador Coussin ultra-thin automatic minute repeater, which took about 3 years, And 6 professional engineers put into this task.

  Turn the lever at 9 o’clock to activate the minute repeater function. The sound is produced by the chatter when the hammer hits the gong. The hammer is made of stainless steel to ensure optimal hardness and weight ratio. The gong is made in one piece to achieve the best vibration frequency transmission, so that the sound is transmitted from the movement to the case. In order to maintain its pure sound quality during the transmission of sound, the movement is equipped with a set of inertial speed flywheels to adjust the rhythm of the hammering from the beginning to the end of the time.

  Jacques Drogh minute repeater watch J031033200

  If you feel that the above-mentioned minute repeaters lack a sense of picture, then this watch from Jacques Dro will definitely make you meet the visual shock. Birds have always been the inspiration for Jacques Dro. After two years of research and development, the Jacques D’Oro timepiece repeater watch has given the mission of freedom to birds, using a gold case with a diameter of 47 mm and a thickness of 18.4 mm. Dial, dial with hour and minute display function. In addition to the small round dial, the dial is also decorated with lifelike patterns.

  Jacques de Loire minute repeater J031033200 uses a manually wound movement RMA88. Its outstanding feature is the use of the most sophisticated technology in the fine watchmaking industry: the minute repeater function. At the 9 o’clock position of the case, there is a time signal control lever. When we pull the lever, we will hear the hour, minute and minute clock sound. At the same time, the eggshell in the bird’s nest will crack and a fledgling emerges. The fledgling is waiting to be fed, and then the female feeds it. When this scene appears, it is to witness the magical depth, let you marvel at the brand’s excellent skills, and feel the tenderness of that moment. The harmonious and perfect resonance effect of the church gong is derived from the operation of the double ring movement, and its complexity is comparable to a full set of rhyme clocks. The watch has a 48-hour power reserve and is available in white gold with diamonds and red gold. Each is limited to 8 pieces.
Summary: The watch is a poison. You will feel the deep attraction when you slowly approach it. Once you fall in love, you cannot extricate yourself. Minute repeaters are small in quantity and high in price, but there are still many people who are obsessed with this and enjoy the beautiful melody of timepieces. The minute repeater watch is like Yangchun Baixue. Only when you really understand and love watches can you be intoxicated. Of course, you must have strong economic strength to back it up. Therefore, if someone plays the minute repeater, and please appreciate the wonderful and magical sound, don’t regret your praise! (Picture / text watch home Li Shuai)
Due to the limited space, the above only lists the five-question questionnaires for five brands. You cannot list classic models one by one. For more models, please look forward to future articles.


2015 Basel Watch & Clock Fair: Patek Philippe Chronograph With Double Hands, The Watch’s Great Style

Patek Philippe is known for making two-hand chronograph chronographs. During the event, these timepieces can continuously measure the elapsed time and have been one of its most desired products for decades. Back in the 1920s, this watchmaker first introduced a wrist-mounted precision chronograph, which at the time had been equipped with a dual-hand rattrapante function. The new 5370 dual-hand chronograph chronograph was released, making watch collectors, hobbies and time enthusiasts excited.

Patek Philippe No. 5370 double-handed chronograph with precise construction and authentic black enamel finish.

In 2009, Patek Philippe launched the CH 29-535 PS movement, which belongs to its latest chronograph exclusive movement at that time, following the classic operating principle (hand-winding and the use of column wheel and lateral clutch). It can be seen that the brand will soon have a new generation of movements coming out, the model name CHR, which is the abbreviation of French CHronographe à Rattrapante, means the double-handed chronograph. As of 2012, the brand launched the 5204 double-hand chronograph chronograph with built-in CHR 29-535 PS movement. It also has a perpetual calendar function, which inspires all Patek Philippe collectors. Now, for the first time, this caliber removes the perpetual calendar complication, and acts as the core of the new 5370 watch with a pure dual-hand chronograph device. The main force of the watch is the chronograph function. The appearance of masculinity is dedicated to men who value certain values. These values ​​include: time, sincerity, tradition, practicality, accuracy and autonomy, as well as long-term free and elegant.
In addition, the 5370 watch has a two-button design, which enriches the Patek Philippe pure dual-hand chronograph style. The watch uses two buttons to perform start, stop and redesign functions, and a two-hand seconds function switch button is added to the crown. In contrast, Patek Philippe’s number 5959 chronograph uses a single button to continuously start, execute basic commands such as start, stop, and redesign functions (three-phase column wheel control mode), and another button operates the two-hand chronograph second hand.
Achievements in surface production
The watch number 5370 embodies the functional aesthetics of the Geneva timepiece. There is no unnecessary decoration on the surface, and the charm of the timepiece is completely revealed, which is accurate and fast when reading. The leaf-shaped pointer is beautifully lined, coated with luminous materials, and matched with platinum Breguet-style numbers, the time is clear at a glance. The steel chronograph seconds hand and double chronograph seconds hand are rhodium-plated, and their contours are also slender. Together with the thirty-minute instant jump calculator platinum hands and printed scales, they stand out against the black surface and clearly indicate the chronograph data. The surface is not just black, but it is also black and deep black. This effect can only be achieved by real enamel production. It is reminiscent of Patek Philippe’s many inspiring pocket watch works in the early days, and the origin of the company’s holder Stern family ; Before the acquisition of Patek Philippe by the Stern family in 1932, it had long been known as the surface production industry under the famous ‘Cadrans Stern Frères’ company.

Patek Philippe Number 5370 Dual-Hand Chronograph Chronograph with CHR 29-535 PS

In terms of surface fabrication, making enamel surfaces is a huge challenge. The white gold surface of the number 5370 double-handed chronograph is first manually coated with black enamel, and then the surface is kiln fired at 850 degrees Celsius and the cooling rate is controlled to make the enamel coating like glass. s solid type. This technique creates a dark and deep effect on the surface, and its depth and luster last for a long time, which is no different from the enamel effect presented on ancient Greek enamel crafts. The surface maker then has to drill a number of small holes in the enamel surface to join the delicate pins of the platinum Breguet figure. The enamel layer is both hard and fragile, and the entire process must be done with care. The numbers are in sharp contrast to the black background and multiple white printed scales, including the tachometer scale, and the measurement unit is calibrated to one kilometer. This scale makes the chronograph of the 5370 double-hand chronograph more distinctive, and its appearance is more masculine.
Sources of power, keep pace with the times
The CHR 29-535 PS movement was developed by Patek Philippe and has been built only in a format with a perpetual calendar device. The brand now combines traditional and innovative technologies to create a pure double-handed chronograph movement style, which pleases those who love pure elements. The movement adheres to the tradition and follows the basic operating concepts of a manual winding movement, column wheel control and lateral gear clutches. Patek Philippe has improved many aspects of the movement, and has adopted a number of patented innovations. It has introduced the traditional principles into the 21st century. To improve power transmission efficiency and reduce wear; the gear is not adjusted by the eccentric wheel of the clutch lever, but is adjusted by the guide wheel cap at the end of the clutch lever, which is more convenient and accurate; the jewel bearing hammer has self-adjusting characteristics, Simplified maintenance procedures; the brake lever to stop the chronograph seconds gear is now synchronized with the movement of the clutch lever; the minute calculator slot cam is used to guide the chronograph seconds hand and the two-hand chronograph seconds hand to stop easily, instead of abruptly decelerating.
In addition to the above-mentioned new features, Patek Philippe also cited a number of innovations in the dual-hand chronograph function: a new isolation device design, when the calculation of the elapsed time is completed, the device separates the dual-hand chronograph gear from the chronograph second gear to avoid the occurrence of Unnecessary friction and prevent the balance of the balance wheel from being reduced due to the stop of the two-hand chronograph seconds hand; the second-hand chronograph lever is equipped with a ruby ​​rolling bearing, which is located between two flat heart-shaped cams, which makes the chronograph second hand and The double-handed chronograph seconds hand is superimposed.

Patek Philippe Number 5370 Dual-Hand Chronograph Chronograph with 950 platinum case, platinum and sapphire glass case back for conversion, crown with double-hand seconds function button

The above devices are exquisitely designed and carefully decorated by human hands, in line with the characteristics of Patek Philippe movement. Most steel parts are carefully chamfered, and the surface has a vertical grinding effect. The double-needle seconds clamp also shows a grinding effect. The light and shadow of the movement are interlaced, reflecting the light of gold and red gemstone bearings, reflecting the excellent watchmaking technology, and seeing through the bottom of the gem glass case. This quality of processing, together with the watch’s speed performance, has a daily rate error of no more than +2 to -3 seconds, which has been affirmed by the Patek Philippe mark, representing that the watch meets the strictest brand directive standards in the watch industry.
Platinum case matches perfectly
The precision of the platinum case is comparable to that of the CHR 29-535 PS movement. The case is like a movement. Original design, blueprint, cold forging using a 60-ton gravity press to create the prototype of the case, and time-consuming processing procedures such as chip removal, precision grinding and grinding are completed by Patek Philippe. . Finally, like other platinum watches, a top Wesselton diamond is set under the six o’clock position. The only watchmaking company in Geneva that is owned by the family, and its creative department is also run by the family. Mrs. Stern Sandrine Stern serves as Director. The watch number 5370 shows her design talents enough to create another classic for the brand. The case is carefully sculpted with curved lines, which complements the layers of the watch body and has a harmonious effect. The sapphire glass mirror has a soft curved line, which is integrated with the case by the concave ring. The new spiral-shaped crown has oval buttons on both sides, and the crown itself has added a double-hand seconds function button, which symbolizes balance. The design of the lugs is new, and the sides and the case are combined into a soft arc, showing a horizontal rubbing effect, highlighting the beautiful silhouette. In addition, the two ends of the lugs that connect the strap to the strap do not protrude randomly, but are tied with arched platinum bumps. Despite the different definitions of perfection in the world, Patek Philippe watch number 5370 is undoubtedly not far from the ultimate realm. This workshop presents this latest work, which is indeed a sublimated timepiece experience for watch owners who have such rare masterpieces.


Talking About The History Of Jaeger-lecoultre Air Clock

Baoji needle, Roman numeral enamel plate, moon phase and temperature and humidity three plates.

 Complete green marble base, movement signature JAEGER-LECOULTRE and digital number around 660000. Repeat the Atmos signature on the bottom right foot of the glass cover. This is the first batch of Jaeger-LeCoultre air clocks to try moon phase functions on the basis of the travel time function. Therefore, at that time, the production volume was small and the design was elegant.

 French Jean-Leon Reutter designed the air clock in 1927 and was named Atmos 0 by future generations. However, these design prototypes were never sold, and at the time did not have the title of Atmos 0. The clock is driven by a mercury expansion mechanism that rotates around a cylinder, which is screwed into the mainspring by ratcheting. This mechanical structure can be driven only by changes in temperature difference. This prototype clock differs from later models of air clocks in only a few subtle ways.

 On June 1, 1929, Compagnie Generale De Radio (CGR) established a department dedicated to the production and sale of air clocks. Jean-Leon Reutter was appointed manager of the department. Although it is not clear how many air clocks were produced and sold by the department, they were named Atmos I. The company applied for a patent number 624.595 for Atmos 0 in France and a patent number 664.689 for Atmos I, but never mass-produced Atmos 0. These clocks are beautifully made and have a nameplate that says ‘Reutter Brevet’ or ‘Brevets J. L. Reutter S. G. D. G.’. Patent means patent.

 In September 1932, Jaeger-LeCoultre signed a contract with CGR for its development of movements, and the first movements were manufactured in mid-1933, named 30 ‘A. In 1933 and 1934, the year of this movement The output is between one and two thousand.

 CGR transferred all production work, inventory and unfinished products to Jaeger-LeCoultre on July 27, 1935. While Jaeger-LeCoultre continued to sell AtmosI, it also began to develop a new type of air clock Atmos II. The main new improvement is to change the bellows filled with ammonia and mercury into barrels filled with ethyl chloride.

 Jaeger-LeCoultre officially announced its new air clock on January 15, 1936, and continued to use the 30 ‘A movement. This new air clock was later called Atmos II. Atmos I was produced in November 1936 Completely discontinued. Certain problems caused by the new products prevented Atmos II from entering full production until mid-1939.

 The next-generation air clock model is the AtmosIII, which uses 519 and 529 movements. As Jaeger-LeCoultre acquired CGR during this period, the serial numbers of some Atmos II and Atmos III products were confusing. Since there is evidence that there is overlap in all Jaeger-LeCoultre product sequences, don’t be fooled by the ‘absolute’ serial number.

 The serial numbers of AtmosII and Atmos III are from 4,000 to 59,999, and the production period is from 1936 to the end of 1955.
AtmosIV uses 522 and 532 movements, with serial numbers from 60,000 to 69,999. The important point about this model is that it is the model with the shortest life time of the air clock.

 AtmosV uses 526 movements, while Atmos VI, Atmos VII and Atmos VIII use 528 movements. Atmos VIII is represented by the 528/1 movement. These products have serial numbers from 70,000 through 599,999. The point here is that this was the last ‘real’ Reutter-designed air clock, which was discontinued in 1983.

 At the end of 1983, Jaeger-LeCoultre completely redesigned the air clock and developed the 540 movement. The air clock type label (Atmos 0-Atmos VIII) has also been removed. The serial numbers of these new air clocks start at 600,000 and continue to this day, and are applied to a variety of movements and models.

 The air clock movement shown in the figure above has already used the improved 540 movement, but the kinetic energy of the movement still does not fully meet the needs of multi-function, which has also prompted the development of Jaeger-LeCoultre air clocks for the development of a new generation of movements. Soon A new generation of 560 movement with stronger and more stable kinetic energy was born, so the multifunctional Jaeger-LeCoultre air clock using 540 movement has a short production time and a low output. Now using the new 560 movement plus moon phase, calendar and other functions is commonplace.