@Mike Korolev You have posted this same quarter a few days ago. We already gave you the answer. It's a hit from another reeded coin. Contact mark. Not a Mint Error!
Here is a better picture from his other thread https://www.cointalk.com/threads/er...-stamp-by-his-left-thigh.338412/#post-3513337
Yeah that was my first time on here I wanted to redo pic but not sure how yet. In better it looks like a cursive B sorry about the pic. Its stamped but a cursive letter from another coin can do that. I just saw it one day I look for double stamped and so forth I just find it odd is all it's really been through circulation be cool if it wasnt.