In the place of where the mint letter (D for Denver, P for Philly, S for San Fran) should be there is a filled in square? That's the only error I have found on penny
Cents only have D and S Mint Marks. No P were ever used until this year, 2017 You probably have a D mint mark with a small Die Chip
I was using that as an example for those who didn't understand what I meant by Mint letter. You could be correct about the D. It is completely filled without a D outline. It is symmetrical and completely filled in
