Sharpie Counterfeit Detector Marker

Counterfeit Detector by Sharpie is specially formulated to detect bad bills. The technology reacts to the presence of a key ingredient present in papers that are not used by the U.S. Treasury. The ink marked on a suspect, counterfeit bill will change in color from golden brown to blue-black. An authentic bill will not produce an ink color change. This marker is effective on all U.S. currency.

Sharpie Counterfeit Detector Marker Effective on all U.S. currency Mark a line on bill Blue/black indicates suspect bill No color change means bill is OK