I posted yesterday (a lost post) that it is obvious from the disclaimer that the Auction company is not taking any position on whether it is authentic. To me, since they are the posters on ebay, that is an authenticity disclaimer that Ebay is not suppose to allow.
Also I noticed in their description they reference the t206museum. If you go to their site they have a picture of the card and it says it is a fake. That seems like a backfire on their part. haha