CASE: Two-body, polished, case back with 4 screws, chronograph buttons at each side of the top, winding crown between the lugs at 12 and protected by a sprung cover released by a catch behind, domed sapphire crystal.DIAL: White with applied steel baton indexes and luminous dots, outer white minute division, inner white tachometer scale, vertically aligned subsidiary silver-ringed guilloche dials for the seconds, the 12-hour and 30-minute registers and the 24 hour indication, aperture for the date at 8 o’clock. Luminous steel skeleton hour and minute hands.MOVEMENT: Cal. 2894 EB 400, rhodium-plated, fausses cotes decoration, 53 jewels, straight-line lever escapement, monometallic balance, shock-absorber, self-compensating flat balance-spring, index regulator, hack mechanism. Dial, case and movement signed, in very good conditionDIM:. 55 x 37 mm. THICKNESS: 13 mm