Nolan Ryan/Jerry Koosman – 1968 Topps Rookie
This is the first multi-player card on our list, and the price does not disappoint. In 1969, Jerry Koosman and Nolan Ryan were both rookies for the New York Mets. Koosman played for 19 seasons while Ryan served as a Met for 27 years. They both wore Mets uniforms in 1969 when they won the World Series.
Only one of this dynamic pair has a perfect 10, in mint condition, and 8,000 have been scored. You’re not likely to find another mint-condition Koosman/Ryan around, but if you do, your search could pay off handsomely. Even if it isn’t in excellent shape, it might still sell for $30,000.