This is picture is of a 1979D lincoln cent. I have seen the lower left of the MM notched like this on several Lincon cents mostly '78 and '79. It doesn't really appear to be doubling but more of a notch or a split. I couldn't find a listing for '79 RPM with CONECA. Any Help.
Hi, It might be an RPM. The only thing to be mentioned is that I dont think I've ever seen a 1979 D that didnt look like this one. So it is not at all rare. Have Fun, Bill
There is a 79-D listing at CONECA for a D/D Southeast Tilted...http://www.conecaonline.org/content/lincolnrpms19701979.html#_1979-D