Dri Mark-2PK Smart Money Counterfeit Bill Detector Pen, U.S. Currency

Simply make a small mark on U.S. currency.Chemically sensitive ink works instantly.Amber mark passes the test, while a dark brown or black mark means the bill is suspect.Works on all new design U.S. currency (1959 and later).Dri Mark-2PK Smart Money Counterfeit Bill Detector Pen, U.S. Currency