It looks like it took a hit or possibly a coin wrapping machine, let others chime in and see what they think. IMO Dave
Looks like PMD, like the coin was pushed into a small slot moving the rim on each side toward the center. But, with both sides being exactly the same it is suspicious. Can you get a picture of the edge straight on?
It's possible this one was once owned by Jack Benny (for those of you old enough to understand this.)
If those marks are 180 degrees apart I would say that it got cought in between something that put pressure on both sides at the same time. Like perhaps a sliding or rotating door.
