So, what ever happened to Charles Depollier and his waterproof watch case designs ? ? ? ? ? ? Depollier and his design team gave us some of the most iconic watches and rapid leaps forward in technology during the Great War years. His case designs speak for themselves and they usually sell for higher prices when compared to other case manufacturers. We all know that he fell on hard times around 1922 and was in pretty deep in debt but the financial trouble started brewing during the war years, I've seen the books for myself at Harvard. You don't have to be a forensic accountant to figure that one out after studying his books for an hour. Personally, I think that a lot of his troubles are due to the amount money spent on advertising, they advertised more than just about everybody else. The costs of R&D also played a large roll. But, what ever happened to Depollier after the Great War? We know that he made some very small ladies wrist watches in the early 1920's but it gets fuzzy after that. Do you guys think that he possibly kept on working to advance waterproof case design technology? Depollier's Generation #1 waterproof watch watch case design came out in August of 1918, the Gen #2 waterproof case design called "The Thermo Watch" came out in very late 1918. But, neither of the first two waterproof case designs has ever been found and documented even though MANY advertisements exist for Gen #1 and Gen #2. Everybody knows the Generation #3 Depollier waterproof case design that had the black finish, these are highly sought after by collectors and go for big bucks. But, did Depollier keep on working on waterproof case designs into the mid 1920's ? ? ? ? Is it possible that a Generation #4 Depollier waterproof case design exists that has NOT been documented yet ? ? ? ? What do you guys think?