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Rotonde de Cartier Astromystérieux
Rotonde de Cartier Astromystérieux watch, 43.5 mm, Manufacture mechanical movement with manual winding, calibre 9462 MC. Case in 950‰ palladium, beaded crown in 950‰ palladium set with a blue sapphire cabochon, guilloché dial, apple-shaped hands. Strap in black alligator skin, double adjustable folding buckle in 18K white gold. Astromystérieux complication: mysterious central tourbillon, consisting of the escapement, balance, main geartrain and barrel, and completing one full revolution in one hour. Individually numbered movement consisting of 408 parts including 188 ball-bearings and 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/100 feet).