Cartier (French, founded 1847). An 18k white gold and diamond Tank Americaine Model 1713 wrist watch containing; single cut diamond band and bezel - approx. 7.0 carats total weight, H-I color range, VS2 clarity. Watch with quartz movement, roman numerals, and cream white dial. Serial number 261236CD. Marked for 18k gold quality and for maker. Approx. 35mm x 18mm (lug to lug), 23mm x 13mm (bezel). Length approx. 6.5". Total weight approx. 79 grams.
Watch has new battery and appears to be fully functioning.