The Ref. 5512 from 1959 has pretty much everything we might look for on The present Submariner. Its situation experienced grown to 40mm, up from your 37mm to 38mm of previously items. Crown-guards have been included, as well as the bezel now a bit overhung the aspect of the case https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/