Two-body, solid, polished, transparent case back with 4 screws, bezel and lugs set with 46 round diamonds, screwed bars, cabochon diamond-set winding crown, sapphire crystals. D. Satine silver with painted black radial Roman numerals, secret Cartier signature on the X. Blued steel épée hands. M. Cal. 430 MC, gilt-finish with special Cartier logo decoration, 18 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring. Dial, case and movement signed. Dim. 28 x 34 mm. Thickness 8 mm.