1967 Penny....Greaser?

I think I'm right. Just trying to learn .

 

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Looks like it was in some form of acidic environment. Some might also say it's a dryer coin.

 

This is harder than it looks

 

Don’t overthink it. You may kiss a lot of frogs before you find your prince

 

Keep it up. The more you look at, and the more you read the better you will get. None of our members woke up being an expert on anything. It comes from years of experience! Hold your head up and get 'er done

As mentioned above, this appears to be a dryer coin. The design elements appear "smeared" or "smooshed", and the rim has begun to widen and fold over the words on the 'heads' side. These are key to identifying dryer coins

 

My vote is acid. Not an error, just PMD.

 

The rim is still intact so I don’t see it flat around the edges, hence, not a dryer coin. The entire coin does have the look of being dissolved, so I’m thinking it took an acid bath.

 

This is what's known as a dryer coin. Look for photos. Either in the search box here, or Google. They will match.
If the coin is much smaller and much lighter than a regular coin, then acid.