Jaeger LeCoultre, Very Rare Atmos IV With Black Dial, Manufactured 1955

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Jaeger LeCoultre, Very Rare Atmos IV With Black Dial, Manufactured 1955

About the Item

Jaeger LeCoultre Atmos IV Calibre 532 Switzerland Brass gold plated Year of manufacture 1955 Dimensions: H x W x D: 22 x 18 x 13.5 cm Description: Extremely rare Atmos IV calibre 532 in gold-plated case. Black dial ring with gold numerals 3, 6, 9, 12 and indexes for the remaining hours. As usual with many Atmos watches of the 50s, the 3 and the 9 "lie". Serial number: 71436 Year of manufacture: 1955 The Atmos IV calibre 532 differs only slightly from the Atmos V calibre 526, which is much more popular and was built many times more often. Only on closer inspection, one notices 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. An 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: Nice and authentic condition of the case with light traces of use as usual for its age. The movement has been revised and runs perfectly and reliably. Points of interest: 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 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. 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] You will find interesting facts about the ATMOS from Jaeger LeCoultre in the specialist literature: Jean Lebet - Living on Air

Dimensions:
Height: 8.67 in (22 cm)Width: 7.09 in (18 cm)Depth: 5.32 in (13.5 cm)
Style:
Mid-Century Modern (Of the Period)
Materials and Techniques:
Brass
Place of Origin:
Switzerland
Period:
1950-1959
Date of Manufacture:
1955
Condition:
Wear consistent with age and use. Nice and authentic condition of the case with light traces of use as usual for its age. The movement has been revised and runs perfectly and reliably.
Seller Location:
Greven, DE
Reference Number:
1stDibs: LU5419232064232