Reference 5402BA Royal Oak | A yellow gold automatic wristwatch with date and bracelet, Circa 1978 Dial: anthracite Caliber: cal. 2121 automatic, 36 jewels Movement number: 175'238 Case: 18k yellow gold, case back secured by eight screws Case number: no. 320, inside case back stamped B 28706 Closure: 18k yellow gold Audemars Piguet bracelet with folding clasp Size: 39 mm diameter, bracelet circumference approximately 170 mm Signed: case, dial and movement Box: no Papers: no
