I once was trying to buy a guys 1950's childhood collection, and most of the cards were in really nice shape. But several of the 1956's had the team name cut out very cleanly with something like a razor blade or Exacto knife. I asked him why some of the cards were like that. He said he did it so you could see the team name of the card underneath the cutout card without lifting up the top card?
I don't know why he thought he would need to do this, but hey, he was a kid.