Thanks to your Art Scam site, we dodged an odd bullet with a big cheque from one of your merry crew of scammers, Helen Carzola. Classic case (we now realise) of an order for a piece, followed by a cheque for twice the amount written on the account of a very big corporation in Toronto, but with no address or signing officer's name printed on it. I'm sure you know the Stück.
Anyway, good of you to ferret out these bottom feeders. I'm staggered at the huge number of them.