A Mirror Project

I bought a large mirror at the Goodwill about a year ago. (Sorry about the bad photo quality...I really need a new camera) It was such a great deal, $49.99 and then marked down 40%. It was gold and I had always planned on painting it. Finally last weekend I decided to attempt it and hope that it wouldn't end up in the garbage. As I was taking it apart I saw some very faint printing on the back