Mark,
Uncle Larry’s Watch Shop always has a selection of clock tools for sale. Some of these tools are specialized such as the mainspring retaining rings, the Bergeon Bushing Machine, large winding keys, big ultrasonic cleaning machine. He usually has a lot of that stuff for sale. Check out the shop sites for Arutha, Willofam, Catskill Painter, Gerene and others on this site. These guys fix clocks for a living and know what to get.
david