The Ref. 5512 from 1959 has nearly everything we would try to find on The existing Submariner. Its scenario experienced developed to 40mm, up through the 37mm to 38mm of earlier parts. Crown-guards ended up extra, as well as the bezel now a little overhung the side of the situation https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/