C. Three-body, polished and brushed, transparent case back with 8 screws, stainless steel revolving graduated bezel, screweddown cabochon sapphire-set winding crown protection with security link, Vendome type lugs, sapphire crystals. D. Bicolor guilloché, silver with painted baton indexes and Arabic numerals, power reserve sector at 6, subsidiary 24-hour dial at 12 for the second time zone, aperture for the date between 4 and 5. Luminous blued steel lozenge hands. M. Cal. 480, rhodium-plated, oeil de perdrix and special Cartier decoration, 30 jewels, straight-line lever escapement, monometallic balance, shock absorber, selfcompensating flat balance spring, micrometer regulator. Dial, case and movement signed. Diam. 38 mm. Thickness 10 mm.