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Jaeger LeCoultre Atmos Clock With Black Dial, Made In Switzerland 1965

About the Item

Atmos clock by Jaeger LeCoultre with black dial Switzerland Brass Year of manufacture 1965 Dimensions: H x W x D: 22 x 18 x 13.5 cm Description: Atmos V calibre 526 in a gold-plated brass case. Rare model with black dial ring with Arabic numerals. The model was sold under Ref. No. 5831 from 1963 to 1985. Serial number: 198456 Year of manufacture: 1965 Below the 6 you can see a small "SWISS MADE" imprint on the black background. You can recognise the originality of the black paintwork from this imprint. Condition: Beautiful and authentic condition of the case with slight traces of use typical for the age. The movement has been overhauled and runs perfectly and reliably. Interesting 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 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 clocks, the movements were manufactured by Le Coultre et Cie in Switzerland from 1933 and in 1935 the production rights for the Atmos clock 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 "clock 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 clock 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. [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: Jürgen Abeler - Ullstein Uhrenbuch p. 173 Negretti / De Vecchi - Faszination Uhr p. 195 Jean Lebet - Living on Air
  • Creator:
    Jaeger-LeCoultre (Clockmaker)
  • Dimensions:
    Height: 8.67 in (22 cm)Width: 7.09 in (18 cm)Depth: 5.12 in (13 cm)
  • Style:
    Mid-Century Modern (Of the Period)
  • Materials and Techniques:
  • Place of Origin:
  • Period:
  • Date of Manufacture:
    1965
  • Condition:
    Wear consistent with age and use. Beautiful and authentic condition of the case with very slight traces of use. The movement has been overhauled and runs perfectly and reliably.
  • Seller Location:
    Greven, DE
  • Reference Number:
    1stDibs: LU5419245214152

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