There is a 1980 DDO variety but it doesn't look like yours. Interesting find. I'm not much of an error collector. Can't find my guide to Lincoln Cent varities either....
Yeah, I know. I've already checked Coppercoins.com and CONECA. I have the RPM guides for Lincoln Cents, but no variety guide...yet. Thanks for takin' a look.
It Is mechanical doubling. There is a nice 1980 DDO but it does not look like this. The doubling here on this coin is a result of metal being moved around. It is flat and shelflike. Thanks, Bill