Three-body, polished and brushed, bezel with 5 screws and inserted with 34 brilliant cut diamonds, protected crown, concave lugs, transparent case back with 8 screws, sapphire crystals. D. Two-tone silver with applied steel dot indexes and graduated Arabic numerals, subsidiary oval with guilloché dials for the seconds, 30-minute and 12-hour register, outer 1/5th seconds/ minute division, aperture for the date. Luminous steel epee hands. M. Cal. E137, rhodium plated, oeil de perdrix decoration, 27 jewels, straight line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring. Dial, case and movement signed. Diam. 40 mm. Thickness 11.5 mm.