Silver Atmos Watch from Jaeger LeCoultre

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

Description:
Extremely rare Atmos IV calibre 532 in nickel-plated case.
White dial ring with silver numerals 3, 6, 9, 12 and indexes for the remaining hours. As usual with the Atmos watches of the 50s, the 3 and the 9 "lie".
In the area of 6 o'clock we find an engraving "TÜRLER".

This indicates that the watch was originally sold at the Swiss jeweller Türler in Zurich.
Serial number: 71290
Year of manufacture: 1955

The Atmos IV Calibre 532 differs only slightly from the Atmos V Calibre 526, which is far better known and many times more frequently made. Only on closer inspection does one notice that the vertical uprights of the case are mounted at right angles and not diagonally across the corner as on the Atmos V. In addition, the front uprights are discreetly accentuated by a shape that tapers towards the front.
The front door has a circumferential frame and a centrally positioned pull knob for opening.

A silver Atmos V to compare the above details can be found here.

The Atmos IV is generally quite rare. It was produced with calibres 532 and 522. The better known watch from the Atmos IV family is the so-called "Tuxedo", which has the same case shape, but differs from the model offered here by a very striking front door.

Condition:
Absolutely mint condition.
The movement has been revised and runs perfectly and reliably. The case has been re- nickel plated and is in top condition.

Fun Facts:
The "clock 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 clock stands out because of 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.

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 no longer available. Please contact me if you are looking for a similar model.