Dri Mark Smart Money Counterfeit Bill Detector Pen for Use with U.S. Currency, Black / Dark Brown
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). Product Description Highly effective and inexpensive tool for detecting bad bills and counterfeiters from passing [...]

