Jaeger LeCoultre Atmos Clock, Lapislazuli Blue Dial, Kal. 528, Year 1979

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Jaeger LeCoultre Atmos Clock, Lapislazuli Blue Dial, Kal. 528, Year 1979

About the Item

Switzerland Brass gold plated Year of manufacture 1979 Dimensions: H x W x D: 23 x 21 x 16 cm Description: Atmos VIII in matte brushed gold plated case with polished stands. Rotating pendulum with vertical milled stripes. Square dial in original and very rare lapis lazuli finish with Roman numerals. You can recognize the original finish by the fact that it is not a "solid" blue, but a multi-color blue, black and gold finish. You can also see the imprint "Jaeger LeCoultre" below the XII and "ATMOS" and "SWISS MADE" in the VI area. This version was produced under ref. 5913 exclusively in 1979. serial number: 507741 Year of manufacture: 1979 Condition: The clock is completely overhauled and runs absolutely reliable and accurate. Very nice condition. The photos are not "embellished", the case condition is as shown in the photos. Fun Facts: In 1927, the young engineer Jean-Léon Reutter presented the prototype of the Atmos 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 in Switzerland from 1933 and in 1935 the production rights of the Atmos were transferred to Ets. Ed. Jaeger. They focused on developing a simpler and more robust engine and from 1938 the era of the Atmos by Jaeger-LeCoultre began. 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 is conspicuous by its cylindrical box on the back. Inside it, 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 just one degree celsius winds the watch for 48 hours. This interesting winding mechanism is complemented by an excellent movement of extreme precision with a heavy torsion pendulum. The condition for the accuracy of the clock is a stable and vibration-free installation. It is also worth mentioning the absolute environmental friendliness of the clock, which does not need a battery or any other electric drive, despite the unlimited running time. 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] Interesting facts about the ATMOS from Jaeger LeCoultre can be found in the technical literature: Jürgen Abeler - Ullstein Uhren Buch p. 173 Negretti / De Vecchi - Faszination Uhr p. 195.

Dimensions:
Height: 9.06 in (23 cm)Width: 8.27 in (21 cm)Depth: 6.3 in (16 cm)
Style:
Mid-Century Modern (Of the Period)
Materials and Techniques:
Brass,Gilt
Place of Origin:
Switzerland
Period:
1970-1979
Date of Manufacture:
1979
Condition:
Wear consistent with age and use. The movement is freshly overhauled and runs absolutely reliable and accurate. Very nice condition. The photos are not "embellished", the case condition is as shown in the photos.
Seller Location:
Greven, DE
Reference Number:
1stDibs: LU5419225444702