The present Rolex lot is a reference 6538 which was in production from 1954 to 1959. The watch is waterproof to a depth of 200 meters as stated on the dial. Although it enjoyed a relatively short production time of 5 years, different variations of the dial have been spotted by collectors and the rarest of such dials would probably be the explorer dial with a red meter line. Reference 6538 is also one of the most sought after submariner models as it was also worn by Sean Connery in the movie Dr. No. #sothebyswatches #watches #watchesofinstagram #jamesbond #seanconnery #drno #wristwatch #watches #watchesofinstagram