Tell us a little about yourself or what and why you collect. You can post question here also.
I apologize for not being smart enough to tell the difference, but to me it looks like a mint error, because I can't see how could damage was done in circulation.
With a sharp edge or power tool. Similar to this coin I found but is post mint damage.
Thank you for your help!
Welcome and it boils down to experience with the minting procedures and techniques used. It doesn't seem possible some one would intentionally damage a cent but curiosity and boredom are a driving "creative" force.