These Sharpie Counterfeit Detector Pens are specially formulated to detect bad bills
- Counterfeit money detector pens are specially formulated to detect bad bills.
- Golden-brown ink changes to blue-black when marked on a suspect, counterfeit bill.
- Technology used by counterfeit marker reacts to the presence of a key ingredient present in papers that are not used by the U.S. Treasury.
- Authentic bills marked by a counterfeit detector pen will not produce an ink color change.
- Comes with 12 counterfeit detector pens.
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