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Dating Your Atmos Clock. Though there is no known published reference books that date or 'grade' Atmos Clocks based on age or condition, the Chart below may be helpful in determining the age of your Atmos Clock. You can also refer to our Atmos Gallery Page for help in identifying the make and model of your clock. With the exception of the original Antique "Atmos I" and "Atmos II", Mercury Reutter models the following Chart lists Atmos Clocks beginning with some of the earliest models or calibers and their respective serial numbers:. E-mail: clockman atmosclocks. All rights reserved. Dating Your Atmos Clock Though there is no known published reference books that date or 'grade' Atmos Clocks based on age or condition, the Chart below may be helpful in determining the age of your Atmos Clock.

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The above information comes from LeCoultre catalogues and documents. The following is primarily from Living on Air - History of the Atmos Clock by Jean Lebet. Jean-Leon Reutter, in France, designed the Atmos Clock in and this is referred too as the Atmos 0. These prototypes were never sold and never called the Atmos 0 at that time. The LeCoultre Atmos clock designers didn't always make finding the serial number an easy endeavor. The Atmos clock's bellows may have the date stamped on them. The bellows need to be carefully handled. A professional may be the best bet for locating the serial number if . It is a tribute to the very first Atmos clock and its avant-garde nature. From Art Deco through to contemporary art, the rare crafts and complexities of watchmaking, the Atmos has always kept up with the times, while maintaining its soul thanks to the reinterpretations of great designers working together with Jaeger-Lecoultre.

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The above information comes from LeCoultre catalogues and documents. These prototypes were never sold and never called the Atmos 0 at that time.

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His clocks were driven by a "mercury in glass" expansion device which rotated a cylinder which wound the mainspring by ratchet. The mechanism operates on temperature change only.

The clocks are slightly different to the later Atmos models in minor details of escapement. On June 01,Compagnie generale de radio CGR created a department devoted to the manufacture and sales of the Atmos clock.

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Jean-Leon Reutter was appointed to manage that department. It is unclear how many were made and sold but they are referred to these as Atmos I's.

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Two French patents were granted for the Atmos 0 In September LeCoultre entered an agreement to develop movements for CGR and first deliveries were made in mid and these movements were called the 30" A calibre. Annual production of these movements was between one and two thousand for years and LeCoultre continued to sell the Atmos I while it was developing the Atmos II, which the primary improvement was the change from an ammonia and mercury "bellows" to a canister filled with ethyl chloride.

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By January 15,LeCoultre announced its "new" Atmos and they were still using the 30" A calibre movement. These "new" Atmos' were later called Atmos II's.

A Web page devoted to the repair and service of the LeCoultre Atmos Clock Service and Repair, Reutter Atmos clock repair, (Including the 50th and th anniversary special edition Atmos by Jaeger-LeCoultre) I have Acrobat files for Dating the Atmos. The Atmos bellows. What is it and how can you tell if it's still good. Approximate Year Manufactured. Late 's to 's. Unknown, only a few manufactured. 's. 's. Using the file above you will see some of the Atmos clocks listed by serial # that I've worked on and you can extrapolate the date of your Atmos from those listed. LeCoultre went into full production around May of The above dates and serial numbers will give you a reliable way to date any Atmos.

By November of the Atmos I production was stopped completely. Problems arose and "full" production of the Atmos II did not start until mid The next model was the Atmos III, which included the caliber and caliber.

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There is evidence of overlapping in all LeCoultre models; there are no "absolutes" of serial numbers and caliber numbers. The Atmos IV included calibers and and have serial numbers from 60, to 69, The important thing to know here is that this is LeCoultre's shortest full production run ever.

Lecoultre atmos clock dating

Serial range from 70, toThe important point here is that this is the last of the "genuine" Reutter design Atmos made and production stopped late in In lateLeCoultre totally resigned the Atmos and came up with the caliber.

These serial numbers start withand is still being made today under various caliber numbers and model names.

Make Offer - Vintage Jaeger LeCoultre Atmos Clock Model Serial # Excellent!Runs Aircraft Clock Jaeger pre-WW2 or WW2 LeCoultre Type: SN Rare 8 . A Web page devoted to the service and repair of Jaeger LeCoultre Atmos Clock, the Reutter Atmos clock, the Revere electric clock, the Herschede electric clock, the Telechron electric clock, and mechanical clock repair and clock service. Dating Your Atmos Clock. Though there is no known published reference books that date or 'grade' Atmos Clocks based on age or condition, the Chart below may be helpful in determining the age of your Atmos Clock.

Because of that fact we do not keep up on values of these unique clocks, so please don't call us to ask about your clock as we just can't help you at all. Please be respectful of our time!

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