The Ref. 5512 from 1959 has almost everything we'd look for on the current Submariner. Its case experienced developed to 40mm, up from your 37mm to 38mm of previously pieces. Crown-guards were being extra, and the bezel now a bit overhung the aspect of the situation to make it simpler https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/