I see the "S". Find it very interesting. The coin could be a counterfeit with the "S" being the counterfeiter's signature on the die.
This is sooo funny,yet nail bitingly frustrating,I honestly thought these random letters/numbers were as common as mach/dbling. Flipacoin,what have you started,I cant believe you pointed that letter out,Ive been ignoring them for so long telling myself they aint real. Ive come to the conclusion that there are no varieties or error coins at all and the coins look like what they supposed to.
When you eat the worm thats in a bottle of Mescal you don't need a microscope, you see alot of things
Wth just a little help at the mint that could be done easily. What would be tough would be a 1980 quarter struck on a 2015 cent.