The Ref. 5512 from 1959 has almost everything we would try to find on the current Submariner. Its situation had developed to 40mm, up in the 37mm to 38mm of earlier parts. Crown-guards have been included, plus the bezel now somewhat overhung the facet of the case to make it https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/