ROLEX Submariner. Ref: 5513. Circa: 1975. Watch ROLEX Submariner. Ref: 5513. Circa: 1975. Men's steel diving wristwatch, black dial with luminous indexes, bidirectional bezel. Mechanical movement with automatic winding caliber 1530, Oyster link bracelet. Dial, case and movement signed. Beautiful homogeneous patina throughout the watch. Revised. Diameter: 39mm. Length: 20 cm (adjustable).