the bowen family sends the book to the auction house. chrisieves the autographed joe jackson picture is one of a kind. but before it goes on the auction block, he has to make sure it's genuine. >> we don't sell any autographs without third-party authentication. so, obviously, that's a nerve-wracking prospect. >> and the authenticators have their doubts. how likely was it that it was legitimately signed by joe jackson? >> in my head, i'm thinking, "i'm sure you also have a bigfoot/loch ness monster dual-signed baseball coming behind that, as well." >> here's another quiz question for you. the answer in a moment. experience the ultimate sports hub. where you can find games, news and highlights. all in one place, right on your tv. the xfinity sports zone. use your voice to search every stat and score. follow the teams you love. and, even get notifications with breaking news alerts and more. with the xfinity sports zone everybody wins. now that's simple, easy, awesome. say xfinity sports zone into your voice remote today. >> ...which curved in to