Not sure if it has been expressed before, but there is now evidence that 1998 Sports Illustrated 1/1s are not true 1/1s.
Ebay seller shelbyville_sports_cards has put up quite a few recently and the Rusty Greer was bought by a guy that already had one.
He was the same seller that had a lot of uncut Fleer sheets too. I always had my doubts about the Puckett's so I stayed away from them.