Cartier Rotonde de Cartier Grande Complication Skeleton Watch - 43.5 mm Platinum Case - W158001743. 5mm platinum case, 16. 25mm thick, sapphire back, beaded crown set with a cabochon, sapphire crystal, silvered opaline dial with snailed gold counters, gold flange with sunray effect and black transferred Arabic numerals, blued steel apple shaped hour and minute hands, hammer shaped hands in the small counters, calibre 9436 MC manual winding movement with tourbillon perpetual calendar, single push piece chronograph and skeletonized movement