Rotonde de Cartier Astromystérieux watch, 43.5 mm, Manufacture mechanical movement with manual winding, calibre 9462 MC. Platinum 950‰ case, platinum bezel and lugs set with 84 baguette-cut diamonds totalling 2.97 carats, beaded platinum 950‰ crown set with a brilliant-cut diamond of 0.14 carats, platinum 950‰ dial set with 120 baguette-cut diamonds totalling 3.64 carats, apple-shaped hands. Black alligator-skin strap, 18K white gold double adjustable folding buckle set with 37 baguette-cut diamonds totalling 0.85 carats. Astromystérieux complication: mysterious central tourbillon, consisting of the escapement, balance, main geartrain and barrel, and completing one full revolution in one hour. Movement consisting of 217 parts, including 25 jewels. Movement diameter: 39 mm, movement thickness: 5.9 mm, balance: 21,600 vibrations/hour, power reserve approx. 50 hours. Sapphire crystal and case back. Case thickness: 12 mm. Water-resistant to 3 bar (approx. 30 metres).
The Rotonde de Cartier collection showcases the most advanced movements in Cartier Fine Watchmaking: the Astrorégulateur, minute repeater, Astrotourbillon and skeleton grande complication.