Rolex Submariner ref 5513 "meter first" Movement Automatic cal. 1520 Case Stainless steel with screw back case and revolving calibrated bezel.93150 stainless steel with 580 endlinks.40mm Dial Black matte dial with luminous hands and hour markers Features Known as “meter first” the watch is the last Submariner with plexyglass crystal in production showing on the dial inscription the 200 m depth before the feet. serial ser. 2.322.xxx. circa 1969. Case, dial, movement and bracelet signed.