Nolan Ryan/Jerry Koosman – 1968 Topps Rookie
This is the first multi-player card on our list, and it does not disappoint when it comes to pricing. In 1969, Jerry Koosman and Nolan Ryan were both rookies for the New York Mets. Koosman played for 19 years while Ryan played for 27 years. They were both members of the Mets’ World Series-winning team of 1969.
Only one of this dynamic pair, which has been graded about 8,000 cards, has received a perfect 10. You’re unlikely to come across another mint condition Koosman/Ryan card, but if you do, it will set you back $600,000. Even if it isn’t in pristine shape, it may sell for as much as $30,000.