I don't know what a "Double DD" is, but this is definitely PMD. Sooner or later, you will have to learn about the minting process or else you'll be asking this question for the rest of your life. Chris
I'm shocked at some of y'alls lack of comprehension. Clearly "DOUBLED DD PMD" is a planchet struck twice by a doubled die and a third time by a freight train. I haven't been here long and it seems that I have figured that one out all by myself.
Ok chris here is the link > https://www.cointalk.com/threads/double-dd-pmd-1980-penny.260364/#post-2095968