Atmos is the brand name of a mechanical torsion pendulum clock manufactured by Jaeger-LeCoultre in Switzerland which does not need to be wound manually. It gets the energy it needs to run from temperature and atmospheric pressure changes in the environment, and can run for years without human intervention.

When was the Atmos clock invented?

1928 The first Atmos clock was born in 1928 when a Neuchatel engineer called Jean-Leon Reutter built a clock driven quite literally by air. Alongside work within the Jaeger-LeCoultre workshop, the Atmos clock was crafted in 1936 into a technical marvel that could not only be patented but work functionally.

How much does a new Atmos clock cost?

The value of an Atmos clock may lie in its condition more than in its serial number or age. The most common Atmos types in fairly good condition can fetch anywhere from $300 to upward of $1,000. This is for model numbers 519, 526, 528 and 540. These clocks have the standard brass and gold-plated cases.