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warshawlawincluding several Beatles sets and an Exhibit card (see my web site for a picture). So the card thing won't win over in and of itself. I think Lennon will be more famous in 500 years simply because music has universal appeal and proven staying power for the really great ones (Beethoven, Mozart, etc.), as does literature (Homer, Shakespeare, etc.). You can play a Lennon tune; you can't play a Ruth HR.
I hope that baseball has a 500 year history but the odds aren't as good as for literature and music.