Protect your business from counterfeit currency with the Counterfeit Detector Pen from Dri Mark. This compact and portable pen uses chemically sensitive ink to instantly identify genuine US bills from counterfeits. Simply make a small mark on the currency bill - a yellowish mark indicates a real bill, while a dark black or gray mark reveals a suspect note. Designed for use with all new US currency (1959 and later), this pen is a must-have for cash handlers in retail, hospitality, and financial settings. Made in the USA for durability and reliability, it's an inexpensive way to prevent financial losses from counterfeit cash. Pair it with Dri Mark's currency counters and sorters for a complete cash management solution.