To bad it is difficult to prove that it is the one you purchased there. Otherwise could be something to discuss with the local police. In most of such instances the people at the auction would simply say that you did not buy THAT coin there.
That is not even a good faked one. When we were kids we used to modify a 44D to a 14D by erasing part of the 4 and ours looked better than that one. And we were kids.
Stay away from any auction or anywhere if you can not inspect the merchandise.