The “D” stands for the coin being a product of the US Mint in Denver, Colorado, and the “S” stands for the coin being a product of the US Mint in San Francisco, Ca. Some coins also carry a letter “P” that stands for them being produced at the US mint in Philadelphia, Pa. Many coins do not have any mintmark…
Where does the P come from on a nickel?
“ P” mintmark – Philadelphia, Pennsylvania; the mint has been officially striking coins since 1793, but its “P” mintmark would not debut until 1942, when it was first seen on the Jefferson wartime nickels – some of which had “P” mintmarks until 1945.
