The Ref. 5512 from 1959 has almost all the things we'd search for on The existing Submariner. Its situation had developed to 40mm, up with the 37mm to 38mm of previously items. Crown-guards had been additional, 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/