Originally Posted by luck15hope
I would have to say that you are wrong. At the time of your cards release, the autographs only guarantee or warranty was specifically those stickers in particular. The autographed cards nowadays are produced without stickers. The stickers are replaced by the guarantee being printed on the back of the card, something to the extent of "This autograph is certified and was witnessed by a Topps employee". That is the new form of guarantee. In 2005, the only guarantee was those Stickers, since there was no other form of guarantee printed on the back of the earlier cards.
I think the reason I disagree is because I have another Topps card maybe more than one that is missing the autograph but does have that square sticker on back.
Now I could sign my name to that card and just because the sticker is there it does not make it authentic.