To keep it from rusting further will be the problem. Not sure where you live in 'Carolina, but my experience with the weather, tells me good luck. Hot humid summers,cold wet,snowy winters and if you live near the coast salt water damage. A hard trio to fight with a sign aready showing "distress". I would suggest finding another sign that fits the bracket and hang your sign indoors. Either way, with a little "elbow grease" you will have a very fine and interesting "show piece", IMO. Please share photos of "before and after", we all do like photos.