The Ref. 5512 from 1959 has nearly almost everything we'd seek out on the current Submariner. Its circumstance experienced grown to 40mm, up from your 37mm to 38mm of previously parts. Crown-guards were being extra, plus the bezel now somewhat overhung the side of the case to make it simpler https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/