I noticed this was your very first post - so, Welcome Aboard! You didn't list your state (or country) in your profile. So, you might consider jumping over to Sub-Forum: Select Your Area.... for information (i.e., clubs, hunts, finds, legends, maps, etc.) directly related to your state (or country).
I moved ya from NEW MEMBER INTRODUCTIONS over to COINS for more exposure.
NOTE: Forum NEW MEMBER INSTRODUCTIONS Description: New to TreasureNet? Introduce yourself to our community here! Welcome aboard and Happy Hunting!
It's just damaged, either intentionally by someone peening the edge, or it may be a dryer coin. Coins can be caught in the drums of commercial dryers, causing this type of damage.