Atmos Classique by Jaeger LeCoultre, built in 1971

Dimensions: H x W x D: 22 x 18 x 13.5 cm

Description:
Atmos V calibre 526 in gold-plated brass case.
Classic white dial ring with Arabic numerals.
Serial number: 325454
Year of manufacture: 1971

Condition:
Flawless movement condition. Absolute accuracy. Very nice case condition.

Fun Facts:
In 1927, the young engineer Jean-Léon Reutter presented the prototype of the Atmos watch 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-LeCoultre began.

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.

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

Price: 2450,- €