At least two autographed cards from this 217-card set were inserted in every Extended Series pack. Super Packs with four autographed cards were seeded one in every 12 packs. Most players signed 5000 cards, but short prints (500-2500 of each) do exist. On average, one in every nine packs contains a short print. All short print cards are individually noted in our checklist. By mistake, Andruw Jones, Ryan Klesko, Andy Pettitte, Kirby Puckett and Frank Thomas signed a few hundred of each of their cards in blue ink instead of black. No difference in price has been noted. Also, the Juan Gonzalez, Andruw Jones and Alex Rodriguez cards available in packs were not signed. All three cards had information on the back on how to mail them into Donruss/Leaf for an actual signed version. The deadline to exchange these cards was December 31st, 1998. In addition, middle relievers Doug Creek and Steve Parris failed to sign all 5000 of their cards. Creek submitted 1,950 cards and Parris submitted 1,800. Finally, an autographed jumbo version of the Extended Series Frank Thomas card was distributed to dealers in March, 1997. Dealers received either this card or the first series jumbo Thomas for every Extended Series case ordered. Each Extended Thomas jumbo is individually serial numbered to 1,500. A very popular Sammy Sosa card, one of his only certified autographs, is the key card in the set.