I did see also mentioned earlier the '58 Mantle All-Star in Stand By Me. The error there is the '60 Yogi Berra that is with it. (The movie was set in 1959).
Also with Stephen King's Needful Things - the card in the book interestingly enough is a '56 Koufax, not Mantle. I guess the Hollywood folks thought Mantle would play better on the big screen. Also if you read the book, you will pick up enough about Stephen King's description of the young boy as a card collector to know that he can do good research as an author -- but he's no card collector himself.
"Fleers" and some fictional "Lucky Strike" cards?