I am not certain so wait for the experts ....
But I think you might have a clash there.
However it could be PMD...I'm not sure. It is possible that the coin got damaged by another coin and a whole lot of weight.
The streaks are caused by less than perfect metal (improperly mixed alloys? I think) and they're commonly called woodies because the streaks look like wood grain.
I'll be back to see what others have to say.
But I think you might have a clash there.
However it could be PMD...I'm not sure. It is possible that the coin got damaged by another coin and a whole lot of weight.
The streaks are caused by less than perfect metal (improperly mixed alloys? I think) and they're commonly called woodies because the streaks look like wood grain.





















