Ballon Bleu de Cartier watch, 40 mm, mechanical movement with automatic winding, calibre 1847 MC. 18K rose gold case, fluted crown set with a blue sapphire cabochon, silvered guilloch? dial, blued-steel sword-shaped hands, sapphire crystal, interchangeable brown leather strap, interchangeable 18K rose gold folding buckle, calendar aperture at 3 o?clock.
