Centurion 3513B-1 Detection Pen

Mark on a non-printed area of the bill if the mark stays amber the bill is valid. If the mark turns dark brown or black it should be considered suspect of being counterfeit. Effective on US bills printed 1959 and later.nullnull COUNTERFEIT DETECTION PENS US CURRENCY

Mark on a non-printed area of the bill, if the mark stays amber the bill is valid. If the mark turns dark brown or black, it should be considered suspect of being counterfeit. Effective on US bills printed 1959 and later.