Sadly, this is, I believe, $800 you'll never get back. If I'm not mistaken, this is a
cast fake of an Antiquanova
replica. It's one of the "Toronto Group"
fakes. Though the name "Toronto Group" is used, there's no indication that more than one person is behind this ongoing
eBay scam, now more than two years running. The seller puts up, with each round of scam
auctions (always under a new
eBay I.D.), several dozen of the same
cast fakes. Almost always, he makes the
auctions private, meaning others can't warn bidders. He either keeps
his own feedback private, or more often, creates about 12 to 15 positive feedbacks by
buying very low-cost items on
eBay, stamps for $1, this
type of thing. The lesson, for everybody, is to never buy a coin from anybody who creates
auctions like these. Don't buy from a seller who creates private
auctions unless you know the seller and know he has a
good reason for doing this (there's almost never a
good reason). Check the seller's feedback.
Caveat emptor.