What do you think caused the flat outer ring on the reverse of this 1941 Mercury. Post mint damage, or grease on die at time of stamping.
I was starting to go through my 2900 count of mercs and found this one.
Is it worth saving as an error or put it on my TO SELL STACK.
To me, it does look like a grease error. But.. it is possible the coin was face down with the reverse exposed to severe wear. Mostly speculation on my part!