Case: Three-body, polished, concave bezel, curved stepped lugs, button for start/stop and return-to-zero of the chronograph, transparent back with 6 screws, sapphire crystals.Dial: White enamel with black Breguet numerals, pulsometer scale, subsidiary dials for the seconds and minutes, 24 hours indication. Steel “feuille hands”.Movement: Cal. 121400, rhodium plated, straight line lever escapement , monometallic balance, Breguet balance spring.Dial, case and movement signed.Dial, case and movement in very good condition.Diam:39 mm Thickness 12 mm