Thanks for the comments and suggestions. I also got some good tips from Kevin W.. I removed the cover and cleaned and lubed the mechanism iwth WD40, and the clock mechnanicals work fine (runs for 2.5 min per winding, but the solenoid that rewinds the spring isn't doing it's job. May be bad points, or a bad connection in the works that I haven't found yet.
If I wanted to put a quartz mechanism in it, what is the best source?