Rolex Turn-O-Graph ref 6202The Rolex Turn O Graph ref. 6202, introduced in 1953, is often called the grandfather of the modern Rolex sports watch. While the Submariner receives most of the fame, the 6202 Turn O Graph was actually the first mass produced Rolex to feature a rotating bezel. It established the design language later seen in the Submariner, GMT Master, and the early Milgauss. Before the 6202, Rolex watches were mostly elegant Oyster Perpetuals; this model marked