Reference 5513 Submariner 'Meters First' | A stainless steel automatic wristwatch with bracelet, Circa 1968 Dial: black Caliber: cal. 1520 automatic, 17 jewels Case: stainless steel, screw down case back Case number: 1'749'693 Closure: stainless steel Rolex Oyster bracelet with folding clasp Size: 39 mm diameter, bracelet circumference approximately 170 mm Signed: case, dial and movement Box: no Papers: no Accessories: Rolex service box and one additional link