Dri Mark Counterfeit Money Detector Pen
Dri Mark's classic counterfeit detection pen tests for counterfeit bills by quickly authenticating genuine banknote paper.
Make a small mark on US currency. A clear/amber mark indicates US currency paper. A dark mark means the bill is probably counterfeit. Since currency paper stock is not available to the public, Dri Mark's special ink authenticates the paper's stock by color.
This bill checker has been the standard in counterfeit detection for over 25 years. In 1991, Dri Mark purchased the patent for the first Counterfeit Detector Pen. This product quickly became the most popular counterfeit detection product in history and was the first of many patented innovative detection and security products which Dri Mark has brought to market.