The Ref. 5512 from 1959 has nearly anything we might try to look for on The present Submariner. Its situation experienced grown to 40mm, up from your 37mm to 38mm of earlier items. Crown-guards were being included, as well as bezel now a little overhung the facet of the situation https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/