The Ref. 5512 from 1959 has just about every thing we might look for on The present Submariner. Its situation experienced developed to 40mm, up with the 37mm to 38mm of previously parts. Crown-guards had been extra, as well as the bezel now somewhat overhung the facet of the case https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/