Ballon Bleu de Cartier watch, 40 mm, mechanical movement with automatic winding, calibre 1847 MC. Case in 18K rose gold set with 52 brilliant-cut diamonds totalling 1.06 carats, fluted crown decorated with a sapphire cabochon, silvered sunray-brushed dial, blued-steel sword-shaped hands, sapphire crystal, burgundy leather strap, ardillon buckle in 18K rose gold, calendar aperture at 3 oÕclock.