Looks like die erosion (die deterioration) to me, a common non-error. You have a normal coin that does not have the enhanced tail feathers (ETF). The circulation wear results in no extra value beyond face. I don’t see any MD on the numerals of the date, indicating erosion instead.
I tried; I really did. I just don't see any doubling with these Pics. Good thing I have an Eye Doctor Appt. tomorrow.
https://www.cointalk.com/threads/doubled-mint-mark-or-mechanical.417973/ Best to not post the same thing in multiple places.