Without question the most famous baseball cards in the industry are Mickey Mantle cards . the formula is simple he was one of the greatest New York Yankees ever, as cards are in short supply, and the hobby has designated his cards as the cards to own. now before you go out and try and find these cards in mass you must know that they are in short supply. that may be part of the appeal to own the card as collecting anything is dependent on supply and demand as far as the value is concerned. I have been around these cards in quantity, the fact is no one ever has.