About the product
- The original and best Counterfeit Detector Pen, patented by Dri Mark in 1991.
- Comes with an adhesive holder and coil tether to keep your Counterfeit Detector right at the register.
- A simple mark on paper currency: dark mark means counterfeit, light mark passes test
- The only Counterfeit Detector Pen still made in the USA
- Superior quality means superior performance
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