Two-body, polished and brushed, concave lugs, stepped bezel, screwed-down case back and crown, antimagnetic protection shield, sapphire crystal. D. Black with white Arabic numerals and luminous quarter baton indexes, subsidiary dials for the seconds, the 12-hour and 30-minute registers, outer minute and 1/5th seconds divisions with 5-minute/second Arabic numerals, apertures for the days of the week and the date. Luminous steel baton hands. M. Cal. 7902, rhodium-plated, oeil-de-perdrix decoration, 25 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating fl at balance spring, index regulator, hack mechanism. Dial, case and movement signed. Diam. 39 mm. Thickness 15 mm. Approx. overall length 175 mm.