This Cartier Rotonde de Cartier Flying Tourbillon Ref W1556215 in 18K pink gold is rated 9.7 out of 10, it comes with box and paper dated January 2014.
Rotonde de Cartier Flying Tourbillon watch, 40 mm, Manufacture mechanical movement with manual winding 9452 MC certified “Poinçon de Genève”. Case in 18K pink gold, beaded crown set with a sapphire cabochon, white galvanised guilloché dial, silvered open-work satin-brushed grid with sunray effect and black transferred Roman numerals, sword-shaped hands in blued steel. Strap in brown alligator skin with double adjustable folding buckle in 18K pink gold. Flying tourbillon complication with seconds indicated by the C-shaped tourbillon carriage. Individually numbered movement comprised of 142 parts including 19 jewels. Movement diameter: 24.9 mm, movement thickness: 4.5 mm, balance: 21,600 vibrations/hour, power reserve approx. 50 hours. Sapphire case back. Case thickness: 10.6 mm. Water-resistant to 3 bar (30 meters/100 feet). Retail price: $128000