JAEGER-LECOULTRE. Atmos, so-called “Perpetuum mobile clock”, Switzerland, around 1956.

metal, gold-plated, polished and satined. The mechanism was invented in 1928 by Jean-Léon Reutter (1899-1971). Rectangular, slightly protruding base Five-sided transparent plexiglass body with wide brass frame and beveled edges. Light grey dial with Arabic indices. Mechanical clockwork Mechanical drive by converting gases into mechanical energy caused by temperature fluctuations in a capsule.. HxWxD: 22.5 x 18.5 x 14 cm Manufacturer and model name on the dial.
According to the consignor, the rotating pendulum was arrested.