This is probably my favorite piece out of my collection.This Sinclair charger that still works. I water sanded the porcelain sign with 2000 grit sand paper and it took the blue over spray off and cleaned up well leaving only a small chipped spot. I had a friend of mine restore it and also without me knowing he was going to do it, cut a piece of plexiglass and heated it until he formed it like the original cracked piece and it came out perfect.
Plexiglass has to be made because the old one was cracked