Abrasive flap wheels from widgetsupply.com are a great start. Felt pads with polishing compounds (got some great results from the Dremel brand red paste) are great for that final polish and to get rid of shallow rusting/watermarks/patina.
You'll also need pinning stuff like 1/16" brass rod stock (any hobby shop), #0 and #0w brass washers from microfasteners.com, a ball peen hammer and a jeweler's anvil.
If you want to make your own scales, you'll need some good woods, brass sheeting for liners (0.01"), truoil and thin cyanoacrylate (superglue) for finishing, a coping saw.
This is just to get you started. Read through the restoration forum, it has great info on all restoration topics.