I thought it might have been a scratch at first, too. But after looking carefully, it appears to be raised.
Here is a close up of the coin. There is even a tiny raised mark on the edge (although it is a little worn do to circulation). I also tried to run a gentle piece of plastic over it and it, and this line on the coin stops it from going over.


Here is a close up of the coin. There is even a tiny raised mark on the edge (although it is a little worn do to circulation). I also tried to run a gentle piece of plastic over it and it, and this line on the coin stops it from going over.

























