JAEGER LECOULTRE, ATMOS - Jaeger LeCoultre atmospheric clock, calibre 540 with white openworked dial revealing part of the clockwork, gilt spada hands blackened at the tips. Movement with 14 jewels, num. 614064. H. 22.6 x 20.2 x 15.7 cm Condition: In working order Provenance: Bâloise insurance Top5 1985 Please note: The Atmos atmospheric clock works thanks to the temperature variations that take place every day. A gas inside a flexible membrane expands as the temperature rises, compressing a spring that drives the clock.