Not duplicates, but a game that never came out.
http://vgcollect.com/item/1391
http://vgcollect.com/item/280
Apparently some press had a chance to play it, so there might be code out there somewhere, but since 0 copies are known to exist, should this really be in the catalog?
Definitely not. I'll send PMs to the people that claim to own this. If I can't get a concrete answer I'll ask that this be deleted.