Dri-Mark Smart Money Counterfeit Bill Detector Pen for Use with U.S. Currency, Black/Dark Brown (351B1)

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). Highly effective and inexpensive tool for detecting bad bills and deterring counterfeiters from passing phony currency in the first place. Simply make a small mark on U.S. currency. Chemically sensitive ink works instantly. An amber mark passes the test, while a dark brown or black mark means the bill is probably counterfeit. Works on all new design U.S. currency (bills series 1959 an More »