The Ref. 5512 from 1959 has pretty much anything we would search for on the current Submariner. Its situation experienced developed to 40mm, up from the 37mm to 38mm of earlier pieces. Crown-guards were being additional, along with the bezel now a little bit overhung the side of the situation https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/