C. 1980. Elevate your look in an instant with this sophisticated watch, presented by our Estate collection and Baume et Mercier! Features a … C. 1980. Elevate your look in an instant with this sophisticated watch, presented by our Estate collection and Baume et Mercier! Features a 23mm square case, 14kt yellow gold crown and bezel, hand-wound mechanical movement, synthetic sapphire crystal, champagne dial, black leather strap that adjusts up to 7" and a tang buckle clasp. Serial number: 58339-742342. Baume et Mercier women's 14kt yellow gold watch. Exclusive, one-of-a-kind Estate Jewelry.