By understanding the history of Rolex serial figures, collectors and enthusiasts can improved recognize the model’s loaded heritage and authenticate their timepieces. Beginning production concurrently as the ref. 6200, the Submariner ref. 6536 returned to your thinner case and lesser crown (and 100m h2o resistance) but was provided the Cal. https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/