Sharpie Counterfeit Detector Pens - 7 Pack
Sharpie Counterfeit Detector Pens - 7 PackSpecifically formulated to detect bad bills, the ink in the Sharpie Counterfeit Detector when marked on a suspect, counterfeit bill will change in color from a yellow or golden brown to dark blue-black color. The technology reacts to the presence of a key ingredient present in papers that are not used by the U.S. Treasury.The Sharpie counterfeit detector marker features a line width comparable to a 0.5 mm marker.