You seriously think a Kontiki or a UG could rival in the water departement?
On another note, I had always assumed that, like Gremlins, we should keep vintage watches away from water? I am flabbergasted to learn that a vintage 1960s Rolex could be used for diving. Is it because Rolex maintains production of all watch parts issued and that access to seals and such are still available or is it just better craftmanship?
There are 60's and 70's Seamasters that had good water resistance without clunky dive cases. If I remember tonight I'll check AJTT for a couple examples.