the first is a ‘56 penny. I first saw the N in CENT, then the D in UNITED and the E in STATES. I know it must be the dreaded PMD but can’t imagine what would cause this damage in such random coins. The second is the 53D. I see what appears to be a well formed S in TRUST but with an added flair. It looks like the “swirl” on a Dairy Queen ice cream cone. Are these common? Are these face value coins or should I hold on to them?