There's a guy in the Netherlands, Fred Dingemans who makes jump hour watches with old Tenor Dorly movements. I signed up, waited the three years, and got one but it did not stick with me......I think that I wanted the "real" thing and the one that you have, I can't find the sales post but I think one was up on the forum maybe ?5 years ago. Anyway, either he or someone he knows must be able to service these. Good luck!
http://www.dingemansmechanischehorloges.nlClick to expand...