Atmos Clock Cal. 540 in Full Set

Dimensions: H x W x D: 23 x 20 x 15 cm

"As if it were floating in mid-air, the ring-shaped balance wheel turns with infinite slowness without ever stopping. The Atmos Classique table clock with gold-plated case is the perfect union of technology and aesthetics." Jaeger LeCoultre collection brochure.

Description:
Atmos calibre 540 in a 24-carat gold-plated case.
White ring dial with Arabic numerals 3, 6, 9, 12 and eight applied indexes for the remaining hours.
Below the 6 we see the imprint "SWISS MADE". There is also a manufacturer's engraving on the front movement plate. Another imprint can be found at the bottom right of the front plate.

This version, i.e. gold case and dial ring with Arabic numerals, is also called "Classique" and runs in direct succession to the Atmos V, Atmos VI and Atmos VIII models.

Ref. 220.107.1
Serial number: 667810
Year of manufacture: 1991 Sold: 1992.

The watch is offered in a full set. The original packaging including cushioning material and shipping box are present. Also a user manual, the original warranty and inspection papers as well as the sales certificate of the jeweller CAPET in Paris from 1992.

Condition:
Freshly overhauled, very good condition of the movement. There is a small chip on the glass of the front pane at the bottom left. With the glass in place, the spot is only visible on close inspection. Two of the photos give a good impression of this spot.

Interesting facts:
Even though Leonardo da Vinci was able to prove that the creation of a perpetual motion machine is physically impossible, it has been attempted again and again. This was also the case with the Neuchâtel engineer Jean Leon Reuter, who in 1928 invented the technology for a clock whose energy source was drawn from the ambient air, from the atmosphere, so to speak.
Since there were always problems with the clocks, the movements were manufactured from 1933 onwards by the company Le Coultre et Cie in Switzerland, and in 1935 the production rights for the Atmos clock were transferred to Ets. Ed. Jaeger.
The technical principle of the movements built by Jaeger LeCoultre from 1936 onwards is simply impressive: a mixture of a liquid and the gas ethyl chloride is contained in a hermetically sealed capsule. As the temperature rises, the mixture expands, and as the temperature falls, it contracts, causing a bellows in the pressure box located on the back of the watch to move like an accordion. This movement continuously winds the movement. In the range between 15 and 30°C, a change in temperature of just one degree Celsius is enough to provide the energy for about two days of operation.

Price: 2850,- €