C. two-body, polished and brushed, screwed-down case back, hooded lugs. D. black with tritium-coated indexes, auxiliary dials for the seconds, the 12 hours and 30 minutes registers, outer tachometer graduation, aperture for the day/date. "Bâton" tritium-coated hands, red for the chronograph. M. Cal. 13''' rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance, shock-absorber, self-compensating flat balance spring.Dial, case and movement signed.Diam. 41 x 44 mm.Approx. overall length 205 mm.