That old Harmony sound slike a bargain. New machine heads, strings and a bridge aren't a big deal. What matters is whether the neck is in decent condition and not warped, anything else is easy to fix.

My two favourite guitars are a jumbo Angelica (which is a sort of Japanese Harmony copy from back in the 60s, I think) which I picked up for £10, and a midget one with a neck you can detach, if you feel like it, set me back £5. Both from charity shops. Took me a couple of hours to fix them up, and I wouldn't be without them.

As for "finish" - they're for playing, not looking at, though I like the way they look fine.