The Atmos is one of the most fascinating and remarkable clocks produced in the last century. Invented by Jean-Leon Reutter, a Swiss horologist, he was granted the patent for the Atmos clock in 1928. One of the most efficient machines ever designed, it never needs to be wound, driven only by changes in temperature. A sealed gas, which expands and contracts its enclosing chamber temperature fluctuations, winds the clock.

Jaeger LeCoultre improved Reutter's design and since 1935 have been making these clocks in a variety of forms.


This particular example from the 1930s has a wonderful square brown veined marble case with graduated stepped sides, raised on two block feet, silvered Arabic dial with stylized numerals and black geometric hands that give it a wonderful vision of its Art Deco splendor.