Jaeger LeCoultre ATMOS II rose gold

Dimensions: H x W x D: 23.5 x 21 x 16.5 cm

Description:
Atmos II in a very rare rose gold-plated and brushed case. Blued screws.
Dial ring with the old original and slightly tarnished paintwork. As usual with the early dials - with horizontal 3 and horizontal 9.
Serial number: 23717
Year of manufacture: 1950

Very beautiful, absolutely rare clock in this colour version and with front-operated regulating screw!

Condition:
Runs absolutely reliably and accurately.
Case with signs of wear, slight "plaster abrasion" on corners and edges. The photos have not been "embellished", the condition of the case is as shown in the photos.
With original papers.

Interesting 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 concluded a contract with the Compagnie générale de radiologie, which built and sold the "Atmos I" from 1930 under Reutter's direction.
As there were repeated problems with the watches, the movements were manufactured by Le Coultre et Ciein Switzerland from 1933 and in 1935 the production rights for the Atmos watch were transferred to Ets. Ed. Jaeger.
The focus was on developing a simpler and more robust motor, and the era of the Atmos from Jaeger-LeCoultre began in 1938.

The "watch that lives on air" uses the "breathing movements" of a gas-filled bellows caused by temperature fluctuations to wind the movement.
The movement of the watch stands out due to its cylindrical case on the back. It contains chloroethyl, a gas that expands particularly strongly between 10 °C and 27 °C, in a bellows-shaped expansion chamber.
A temperature difference of just one degree Celsius winds the watch for 48 hours. This interesting winding mechanism is complemented by an exquisite movement of extreme precision with a heavy torsion pendulum (rotating pendulum).
The condition for the accuracy of the watch 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 require a battery or any other electrical drive.
For decades, the Atmos has been Switzerland's official state gift to prominent visitors, e.g. politicians from abroad.

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

Price: This watch is already sold. Please contact me, other beautiful Atmos watches are still available.