Cartier. A lady's 18ct white gold and diamond-set rectangular wristwatch ref 2489 case 89716MX Tank Americaine circa 2000, quartz movement, silvered dial, Roman numerals, secret signature at X, inner minute track, blued steel hands, rectangular case with diamond-set bezel and crown, back secured by four screws, case, dial and movement signed, with an 18ct white gold Cartier folding clasp, length 34 mm including lugs.