Mid 1982 they started minting Copper Plated Zinc Cents. Lools like you have one with a plating issue on the mint mark Not a RPM and worth 1 CENT
Eventually it would of turned into this.. I want to share this webpage with you - http://www.error-ref.com/zinc-deterioration-on-lincoln-cents/
By the looks of your pics I can tell that your Cent was struck with a Deteriorated Die. So the mint mark would have that deteriorated look to it also.
Nope! Better pics won't change the fact that this is not an RPM. Like @paddyman98 said, it is probably a plating issue. (Which is very common on Zincolns!) Also, note that you can see the parallel striations around the date which are indicative of die deterioration. Chris
Good info! I was going to ask about this on a hand full of pennies I have found. Now I don't need to and will put them back into circulation.
I just received this penny from the bank and was wondering about the full circle error. Any info would be great. Thanks in advance.
Typically marks like that are from either a counting machine or a rolling machine. In other words, it's common post mint damage, nothing more.