Well first off, the only year that a 'P' appeared on a cent was 2017-P:

The War Nickels during WWII, had the first 'P' mintmarks for Philadelphia. After 1945, there 'P' mintmark was not used until 1980 on all other denominations, except of Cents. So it would be impossible to be a 'D' over a 'P' on a cent.

The War Nickels during WWII, had the first 'P' mintmarks for Philadelphia. After 1945, there 'P' mintmark was not used until 1980 on all other denominations, except of Cents. So it would be impossible to be a 'D' over a 'P' on a cent.






















