Partly off topic, just a remark about water resistance: while I cannot remember early Automatics data such as Sifferts, Viceroys, MH etc. I am fairly sure it did vary along the years, with the '70's at 100m but the later 11063V's cased at 200m - the funny thing is that the ones supposed for actual deep diving such as the 11630P and the Diver 100 were not among the ones most waterproof.
Cheers,
Fabrizio