CASE: Three-body, polished and brushed, screw-down case back and crown, graduated bi-directional revolving gold bezel with black insert for the second 24-hour time zone, crystal with Cyclops lens. DIAL: Black with luminous yellow gold round, baton and triangular indexes, outer minute/seconds divisions, aperture for the date. Luminous yellow gold skeleton hands. MOVEMENT: Cal. 3075, rhodium-plated, oeil-de-perdrix decoration, 27 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and five positions, self-compensating free-sprung Breguet balance spring, Microstella regulating screws, hack mechanism. Dial, case and movement signed, in good condition DIAM: 40 mm. THICKNESS: 13 mm.