A fine Jaeger-LeCOULTRE 'Atmos' four glass brass clock, circa 1990s, Swiss made, marked 400096, a mechanical torsion pendulum clock with chapter ring and visible escapement deriving energy from atmospheric and temperature changes thereby removing requirement for manual winding; marked to top, dial and underside, height 23.5 cm, width 21 cm, depth 16.5 cm