For use with U.S. currency. An amber mark passes the test, a dark brown or black mark means the bill is suspect. Counterfeit Bill Detector Type: Pen; Marking Color: N/A; Counterfeit Indication Mark: …
Mark a line on bill. If amber mark turns black or dark brown, the bill is suspect. Counterfeit Bill Detector Type: Pen; Marking Color: Amber; Counterfeit Indication Mark: Black, Dark Brown; Currency: …