The Ref. 5512 from 1959 has pretty much anything we might try to look for on The existing Submariner. Its situation had grown to 40mm, up with the 37mm to 38mm of before pieces. Crown-guards ended up added, as well as bezel now marginally overhung the facet of the situation https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/