Information about the age and type of your Atmos clock can be located on both our Atmos Dating Page and our Atmos Gallery Page.You can also e-mail us with a description of your clock.IMPORTANT: When contacting us via e-mail, please do not send messages with file attachments without first contacting us ahead of time. How do I find out the Model or Serial Number of my Clock?You can best determine the Model or 'Caliber' of your clock by visiting our Gallery Page and comparing your clock to others listed there and you can e-mail us with the serial number and/or description of your clock. Our repair charges are also listed on that same page.The first Atmos clock was designed by Jean-Léon Reutter, an engineer in Neuchâtel, Switzerland, in 1928.
It is not advisable to try and repair your clock on your own as you can easily cause more problems with the clock that could result in more repairs then necessary; therefore leave the repair of your clock to an expert. If the measurement is more then 22mm at room temperature, the Bellows is not functioning properly.
For Example: The Pendulum of an "Atmos Caliber II" has straights, black lines (see photo), the Pendulum of a Caliber 519 has round "dimples", the Caliber 526 has wide vertical indentations and the Caliber 528 has thin vertical indentations.
How old is my Atmos Clock and how much is it worth?
On 27 July 1935, Jaeger-Le Coultre took over production of Atmos 1 while it developed a second design which used the present ethyl chloride power source.
This model later named the Atmos 2, was announced on 15 January 1936, but problems delayed full production until mid-1939. To date, over 500,000 Atmos clocks have been produced.
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Atmos is the brand name of a mechanical torsion pendulum clock manufactured by Jaeger-Le Coultre in Switzerland which does not need to be wound manually.