I just purchased this watch at auction to keep the scrappers from melting it down. I have been able to find some history on Paul Ditisheim, Solvil, and Titus. This watch is only marked Paul Ditisheim, no Titus or Solvil. I have not been able to date it, the serial number on the movements and the case match and Paul's name appears on the face, the case (back door) and the movements. The serial number is 101338. I gave it a quarter turn to wind it and the thing still works, but could probably use a good cleaning. Any information that could date this piece and anything else will be appreciated.