What Are No Mint Marks?Ī mint mark is a stamped letter on a coin that shows its place of origin. However, during the mid-1960s, the United States briefly stamped coins without mint marks, making them highly sought after by investors.Įxperts from Oxford Gold Group explain everything you should know about these coins. This practice is now an integral part of global currency standards. Greek and Roman artisans began minting coins around the third century with identifiable mint markers.
