So I was looking through my Lincoln Memorials and I thought I found a 1960 D/D, however, when I looked up pictures of what the 1960 D/D looked like, it looks like the second "D" is stamped much higher than the "D" and lightly as well. I'm sure now i do not have the 1960 D/D, however I still think the mint mark looks a little off, like there are 2 "D"s stamped over each other or something. I know my pictures are not wonderful, but if someone could please provide some help, I would greatly appreciate it. Thank you in advance for your help Kyle
There are 113 different re-punched mint marks for the 1960 cent. You can look up which one yours is here - http://varietyvista.com/CONECA Master Listings.htm
Looking at it, it doesn't seem to be a RPM, but more like deterioration/damage of the minkmark die, as the secondary mark seems to overlap in more than one direction. Denver had some horrible die setter problems in that era.Maybe a Rocky mtn High.