Jewellery, Watches and Objects of Vertu

An 18ct white gold ‘Tank Americaine’ calendar wristwatch, by Cartier, the signed guilloche cream dial with black Roman numerals, secret signature at numeral VII, and date aperture at numeral VI, automatic movement, white gold case signed, stamped ‘Automatic, Water resistant, 18k’ and numbered ‘1726 0056921’, with facetted sapphire set crown, to a signed tan crocodile leather strap, with signed suede pouch, dial dimensions 27mm x 16mm. £800-1200