1954 Jaeger-LeCoultre Atmos II Clock w/ Outer Box
£2,550.00 Original price was: £2,550.00.£0.00Current price is: £0.00.
includes our 24 month warranty
The Jaeger-LeCoultre Atmos II, introduced in the early 1950s, represents a refined evolution of the brand’s iconic Atmos clock. This particular example, dating to around 1953, features the elegant rectangular case design and clean dial layout that came to define the second generation of Atmos models. Housed in a gilt-brass frame with four glass panels, it reflects the design ethos of the mid-century period—modern, functional, and sophisticated, yet firmly rooted in traditional craftsmanship. Jaeger-LeCoultre’s mastery of mechanical innovation is evident in both the visual balance and the precision engineering of this piece.
What sets the Atmos clock apart is its ingenious ability to run without manual winding. Instead, it is powered by minute changes in atmospheric temperature and pressure. A sealed capsule containing ethyl chloride expands and contracts with even the slightest fluctuations in ambient conditions, slowly winding the mainspring over time. This ultra-efficient system allows the Atmos to operate continuously for years with virtually no external intervention. A single degree Celsius of temperature change is enough to power the clock for approximately two days, making it one of the most energy-efficient mechanical timepieces ever produced.
Complete with its rare protective outer case, this example is preserved in outstanding condition and includes an additional black replacement dial supplied separately, offering versatility in presentation. The clock retains its original gilt brass case and dial, with no signs of over-polishing or restoration. Seldom found with both accessories intact, this collector-grade piece exemplifies the blend of technical ingenuity and timeless design that has made the Atmos one of Jaeger-LeCoultre’s most enduring creations.