The Ref. 5512 from 1959 has nearly every little thing we'd search for on The present Submariner. Its scenario had grown to 40mm, up from your 37mm to 38mm of earlier items. Crown-guards have been extra, as well as the bezel now a bit overhung the side of the case https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/