by Larry E. Matthews » Nov 13, 2012 11:15 pm
Well, as a rule-of-thumb, any dates earlier than 1492 are probably fakes. I have seen a few "C. Columbus - 1492", but have serious doubts as to their authenticity.
Removing spray paint is always tempting, but you need to look really, really carefully to see what is under it. You just might be destroying some really good historical graffitti in the process.
Drawings of Indians hunting Wolly Mammoths on horseback are also probably fakes.
Good luck !!!