10. Eddie Plank
Card: 1909 –1911 T206
Skinny: The first of three cards from the legendary T206 tobacco card set to make the list of most valuable cards is for the legendary Philadelphia Athletics hurler. During his career, the left-hander racked up 326 wins, including 66 shutouts. His baseball card is a real rarity. The cause for the scarcity is sometimes attributed to a broken printing plate. The real answer will probably never be known. There are only around a hundred known to exist.