Jaeger Le Coultre - Atmos in a plexiglass case

Dimensions: H x W x D: 23.5 x 20.5 x 16 cm

Description:
Atmos calibre 526 in glass/plexiglass case with gilt base and crossbars.
White dial ring with horizontal 3 and horizontal 9.
Serial number: 92737
Year of manufacture: 1956.

Condition:
Very good condition. Movement flawless and freshly overhauled. Absolute accuracy.
The photos are not "embellished", the case condition is as shown in the photos. In most of the photos the clock is shown without the front glass, due to the reflection of the flash when taking photos.
The base and cross braces at the top of the case are newly gold plated.

Fun Facts:
In 1927, the young engineer Jean-Léon Reutter presented the prototype of the Atmos clock he had developed.
The response in the press was great and so he signed a contract with the Compagnie générale de radiologie, which built and distributed the "Atmos I" under Reutter's direction from 1930.
Since there were always problems with the watches, the movements were manufactured by Le Coultre et Cie inSwitzerland from 1933 andin 1935 the production rights of the Atmos watch were transferred to Ets. Ed. Jaeger.
They concentrated on developing a simpler and more robust engine and from 1938 the era of the Atmos by Jaeger-LeCoultrebegan.

The "watch that lives on air" uses the "breathing movements" of a gas-filled bellows created by temperature fluctuations to wind the movement.
The movement of the watch is conspicuous by its cylindrical box on the back. Inside, a bellows-shaped expansion chamber contains chloroethyl, a gas that expands particularly strongly between 10 °C and 27 °C. The movement is then wound up.
A temperature difference of only one degree Celsius winds the watch for 48 hours. This interesting winding mechanism is complemented by an exquisite movement of the utmost precision with a heavy torsion pendulum.
The condition for the accuracy of the clock is a stable and vibration-free installation.

Also worth mentioning is the absolute environmental friendliness of the clock, which, despite its unlimited running time, does not need a battery or any other electrical drive.
For decades, the Atmos has been the official state gift of Switzerland to prominent visitors, e.g. politicians from abroad.

[Source: Jean Lebet - Living on Air / Jürgen Abeler - Ullstein Uhrenbuch]

Price: This watch is already sold. Are you looking for an Atmos? Feel free to contact me, I currently have a beautiful Atmos with a plexiglass case in my assortment!