Dri-Mark Smart Money Counterfeit Bill Detector Pen for Use w/U.S. Currency - Counterfeit Money Detector Pen is ideal for use in busy retail environments. This quick, inexpensive currency-screening device can be used in conjunction with other counterfeit detection methods. Mark a small line on U.S. currency. When mark is amber, the bill is genuine. If mark is black or dark brown, the bill is suspect.

• Simply make a small mark on U.S. currency.
• Chemically sensitive ink works instantly.
• Amber mark passes the test, while a dark brown or black mark means the bill is suspect.
• Works on all new design U.S. currency (1959 and later).