It's very simple, Frank! The Mint intentionally produced crummy dies so junk like this would be posted on CT. Chris
So did someone drop a house on your sister or what's your deal? Sometimes people just want to ask a question so they can educate themselves. And as far as the four posts goes, it took me less than that to have you pegged. I'll refrain from going further into how I feel about people like you that try to cut people down, simply by asking a question.
Based on what I'm seeing, I'd suggest it came from one of the Aluminum good luck horse shoes you see Lincoln cents in. They are crimped on and when the coins are taken out, they leave a small impression around the entire coin like that. Just my guess.
Got stuck in a counting machine lol, severly abused coin that's all keep looking though there are plenty of minor errors to be found