Nolan Ryan/Jerry Koosman – 1968 Topps Rookie
Just like the 4-player card in which Pete Rose was included. This 1968 combo card of Nolan Ryan and Jerry Koosman of the Mets got auctioned off. This card is so rare that there were nearly eight thousand copies submitted for professional appraisal, and there was only one who was granted a score of ten. This explains why the card of Nolan Ryan and Jerry Koosman was able to go for $612,359 at the auction. However, grade 9 of this would go for $20,000 to $30,000.
Nolan Ryan Jerry Koosman – 1968 Topps Rookie
Frank Thomas – 1990 Topps Error
During the ’90s, the most valuable card would be Frank Thomas’ card in the set of Topps. This card is unlike other cards with a name in front of it. Well, this card is known for its error that the name of the player was at the back and not located in front. This error is the reason why it is worth a lot of money. This card of the Hall Famer, Frank Thomas, is worth four or five figures for it.
Frank Thomas – 1990 Topps Error