The Ref. 5512 from 1959 has nearly anything we might seek out on The present Submariner. Its situation experienced grown to 40mm, up through the 37mm to 38mm of earlier pieces. Crown-guards were included, along with the bezel now somewhat overhung the side of the case to make it easier https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/