The Ref. 5512 from 1959 has nearly every little thing we'd seek out on The existing Submariner. Its case had developed to 40mm, up from the 37mm to 38mm of earlier pieces. Crown-guards had been added, along with the bezel now a little bit overhung the aspect of the situation https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/