Three-body, polished and brushed, screwed-down case back, buttons and Triplock winding crown, tachometer graduation on the bezel to 200 units per hour. D. Bicolor champagne and black with applied yellow gold baton indexes and luminous dots, outer minute and 1/5th seconds division, subsidiary dials for the seconds, the 12-hour and 30-minute registers. Luminous yellow gold baton hands. M. Cal. 727, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance adjusted to 3 positions, shock absorber, self-compensating free-sprung Breguet balance spring, Microstella regulating screws. Dial, case and movement signed. Diam. 37 mm. Thickness 14 mm.