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