Baume & Mercier Ref 15600 an 18ct gold wrist watch circa 1985. Dial: onyx, diamond-set quarters. Calibre: quartz. Case: polished round, snap on case back numbered 1617808. Closure: Baume & Mercier black leather and buckle. Dimensions: 31 mm diameter. Signed: case, dial and movement???. Accessories: none