Good luck - the old mechanical clocks seem to be prize possessions nowadays. I have both a Waltham and Thommen 8-day clocks that both need work. Alas, finding anyone with the time and parts to fix them is unlikely.

-Kirk Wennerstrom
President, Cessna 150-152 Fly-In Foundation
1976 Cessna Cardinal RG N7556V
Hangar D1, Bridgeport, CT KBDR