Jaeger Le Coultre Atmos clock, within a glass and gold plated brass case, a fifteen jewel movement, late 20th century, marked to dial and stamped to the underside 'Metal / Caliber 528-8 / Swiss', serial no. 307040. (c.1970) within a sealed capsule, a mixture of gases expand and contract with each temperature change to wind the clock. Working at the time of cataloguing. 22.5 x 18 x 13.5 cm