Anyone know what type of error this would be ???Discovered this error ...on reverse side ,looks like my quarter was first punched with a 2020 diecast,then punched 2021 through the error...words and date above are through error extra circle coin punch...was hoping to sell this coin and probably will get it graded,...any advice or known errors like this around the date and words on any coins would be appreciated .....what could a coin be worth if it's a one of a kind error? Have you scene this type of error before through the date and around the coin back to the date with 2021 and words on top of the error...that would mean a mint error right ? What would you do or I should do if you had this possible rare error....mule,ddr,etc ?