It absolutely was also the 1st to have a sapphire crystal, the initial to become waterproof to 300m, and the last to have a matte dial. In actual fact, some quite late run ref. Commencing manufacturing concurrently given that the ref. 6200, the Submariner ref. 6536 returned to some thinner https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/