CASE: Three-body, polished, unidirectional rotating Perspex bezel with dive timing indicator, protected screw-down crowns, screw down back, sapphire crystal.DIAL: Black with applied luminous baton indexes, outer minute and second divisions, subsidiary dials for the 30 min and 12-hour and constant seconds counters, date aperture at 6 o’clock. Luminous steel Alpha hands.MOVEMENT: Cal. F185, rhodium-plated, perlage decoration, 37 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions, shock absorber, self compensating flat balance spring, Dial, case and movement signed, in excellent condition. NOS (New Old Stock)DIAM: 45 mm THICKNESS: 14 mm