Jaeger LeCoultre - Atmos 150th Anniversary with box and papers

Dimensions: H x D: 34 x 22 cm

Description:
Fine and rare Atmos clock, which was produced in a limited edition of only 3000 pieces for the 150th anniversary of the founding of LeCoultre.
An inquiry I made to the Jaeger LeCoultre manufacture revealed that the model offered here was produced on behalf of the Banque Cantonale Vaudoise (BCV). The clock therefore bears no model number plaques, but plaques with the logos requested by BCV at the time.

Reference number: 220.006
Serial number: 628803
Year of manufacture: 1987; warranty certificate dated May 8, 1987

This clock is offered with the original box, the so-called tabernacle, as well as the accompanying operating instructions and the guarantee certificate.

Inspired by the first prototype of the ATMOS 0 presented in 1927 (see photo), the clock stands on a round brass base and is protected from dust by a mouth-blown glass dome.
The movement of the clock stands out due to its cylindrical case on the back. The saturated gas chloroethyl is contained in a bellows-shaped expansion chamber. Under fixed pressure conditions, the ratio between liquid and gas changes significantly under the influence of temperature fluctuations, and consequently the pressure in the expansion chamber also changes. A temperature change of 1°C shifts the bottom of the bellows by approx. one millimeter and thus exerts pressure on a spring in the bellows. The chain mounted on the spring transmits the force to the movement and thus supplies the energy for approx. 48 hours of running time. This interesting winding mechanism is complemented by an exquisite movement of extreme precision. The heavy torsion pendulum with its six distinctive adjusting screws is also reminiscent of the early days of the Atmos clock in the 1920s and 30s.

Condition: Very nice condition of case, movement and box. The clock runs flawlessly, absolutely reliable and accurate.

Price: 7500,- €