Just found this in a cent roll. It wouldn't slide out like the rest since it was a bit larger due to the strange indent. Could this have happened when it was minted or do you think it is post mint damage?
Here is a picture with the coin facing four different directions so you can see it better.
I don't think so. Post a pic of the obverse. Then again im by far no expert on errors. Could be a double strike (I think its called). Try posting in the Coins section of this forum.