Rolex - an Oyster Perpetual Datejust watch, 36mm. Rolex - an Oyster Perpetual Datejust wrist watch. Circa 1976. Stainless steel case with engine turned bezel. Case width 36mm. Reference 1603, serial 34511732. Signed automatic calibre 1570. Silvered dial with baton hour markers, date aperture to three. Fitted to an unsigned black leather strap with stainless steel pin buckle.