These old obscure electro-mechanical machines are really not that valuable to most people. If you totally have it professionally shopped out like a museum piece, you may have more luck getting some money from a die-hard collector. It's not really about the money to me. Preservation is a big part of the hobby; not just of the mechanics, but of the artwork as well. Those old pins are relatively simple, I would almost recommend building a new cabinet and re-stencilling the artwork back on. If you do actually take on the task of restoring this old machine, please share scans of your artwork. If just a fraction of collectors did this, we probably wouldn't have such a hard time finding replacement components.