I started collecting interesting coins and I just cam across this one and I'm not sure what it would be called.
Hello Stevenboris, #1 :welcome: #2 I believe that I see reeding on the endge of your coin (all the way around). This means that the coin was struck in the collar and must have been perfectly round shaped when it left the mint. This makes me think that it was somehow squashed outside of the mint. I don't believe it is a mint error. I suspect it is "post mint damage" PMD.