Businesses have counted on the Dri Mark Counterfeit Money Detector Pen for over 25 years — you can too! Choose from a variety of pack sizes perfect for small and medium sized businesses that want an efficient option for loss prevention related to counterfeit U.S. currency. These are easy to use — just put a small mark on the bill being presented to you. If the ink remains yellow, you know this is real U.S. tender; if it turns black you immediately know not to take the bill. It is that easy and super fast.
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