This fascinating vintage Rolex Submariner Ref. 1680 features the highly sought-after "Red Sub" MK4 dial, characterized by its distinctive red "Submariner" text and open 6s. Produced in the early 1970s, this version retains all the charm of an iconic tool watch. The watch boasts an original MK4 black matte dial, tritium hour markers with creamy patina, and matching hands. It’s equipped with its original bezel insert, showing light, honest wear consistent with age. The case remains strong with well-preserved proportions, and the watch is fitted with the correct Rolex Oyster folded-link bracelet, adding further vintage appeal. Powered by the robust Caliber 1575 automatic movement, it combines precision and heritage. A true collector’s piece, this 1680 "Red Sub" MK4 is a rare find that captures the essence of vintage Rolex diving history.