Here is an unpolished reference 1680 with engraved serial production 2,9xxxxx circa 1971 known as the Rolex Submariner. The original MKX/feet first dial with perfect pumpkin patina perfectly matches the rare long 5 deep black fat font bezel. Caseback is dated 1971 as well as stamped 1680. The watch comes with original box. The watch is serviced and guaranteed 1 year.