Rolex Submariner 5513/5517

A rare stainless steel automatic centre seconds wristwatch circa 1972 ref 5513/5517 Oyster Perpetual Submariner Made For the British Royal Navy diameter 39mm. , cal.1520 nickel lever movement, mono-metallic balance, 26 jewels, hack feature • black dial with encircled 'T' above the depth markings, luminescent triangle, dot and baton indexes, luminescent sword hands and centre seconds • stainless steel Oyster case with screw-down crown and case back, fixed strap bars, rotating black bezel calibrated for 60 units, case back engraved with the broad arrow, Royal Navy store number, issue number and year • case, dial and movement signed