Odd Impression on 1944p Mercury Dime Reverse
Good afternoon. Please take a look at this dime. I just recently acquired it, and found this odd indentation/crack/dunno? on the reverse north of "PLURIBUS". I searched a few other Merc dimes of mine and found another 1944 with the exact same marking.
Any idea what this might be? Coin pictured is an MS example in a NGC holder, so I don't believe it to be post mint damage