I hope they have it authenticated. Seller, in my opinion, is a member of a dubious cabal with numerous reports on the Coin Forgery eBAy group.
well, the man offers a lifetime guarantee of authenticity, so after the buyer sends the coin off to the TPG and it gets rejected as counterfeit he then gets to try to get his money back from the seller... My guess is that the seller just plays the odds. Sooner or later, someone's going to buy the coin if he tries to push it off on enough rubes. And obviously this buyer is a fool on more than one count. He bought an expensive coin without knowing about that coin and is going to get burned big time. Even if he can return the coin to the seller, he will end up at the very least having paid for shipping from the seller, back and forth from the TPG, and back to the seller. All this and the emotional merry-go-round that he is about to encounter as to whether or not the coin is fake... Buy the book before the coin!