Rolex - an Oyster Perpetual Date Submariner watch, 39mm. ROLEX - an Oyster Perpetual Date Submariner bracelet watch. Circa 1978. Stainless steel case with calibrated bezel. Case width 39mm. Reference 1680, serial 5225684. Signed automatic calibre 1570. Black dial with luminous hour markers, date aperture to three. Fitted to a signed stainless steel Oyster bracelet with Fliplock clasp.