My AL All-Stars set had 20 cards in it, and my NL All-Stars set had 19 cards. I thought at the time that this is the way it was, and conjectured that perhaps computer memory being what it was at the time, maybe there was room for only 39 players total. But that was wrong, fortunately, and I found this Tony Gwynn lost in the closet of my old bedroom when I went to get a few more things from my mom's house this past weekend. It was in the wrong place but the right general neighborhood, mixed in with some non-card baseball memorabilia. Tony Gwynn has now gained his rightful place, joining the other NL All-Stars in a team set bag.
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