Check the listing for details. Dri Mark Flash Test Counterfeit Bill Detector, 3 Easy Tests in One Small Device. Color: Black, Condition: New. Listed at 39.99 USD. Brand New The Dri Mark Flash Test Counterfeit Bill Detector is the perfect solution for quick and easy detection of counterfeit bills. This small device is designed to perform three tests in a row, making it a convenient and efficient tool for retail stores and businesses alike. The black plastic material gives it a sleek and professional look, and it weighs only 4 ounces, making it easy to handle. The item model number is 351FT and the manufacturer part number is also 351FT. The product dimensions are 4.5 x 2.8 x 0.7 inches, making it a compact device that is easy to store. It is not discontinued by the manufacturer and comes with a special feature of quick testing. This counterfeit detection equipment is ideal for those who want to protect their business from counterfeit bills.