This poor 5c went through alot of circulation and believe the mm is PMD but need to confirm it with the experts. Thanks again.
I see a die crack connecting the D to monticello,pictures really are not good enough for RPM evaluation,if it is one its not major.
It could be this one but better pictures are needed. http://www.varietyvista.com/05 JN RPMs/1952DRPM002.htm.
Thanks @potty dollar 1878 I put it at a 15 degree angle and hope these pics are better. It looked like tiny die chips or die deterioration pitting but being below novice probably wrong. I hope these pics help.