Credit Card Supplies Counterfeit Money Detector Pens - 15 pack - Additional InformationCounterfeit Money Detector Pens make a dark brown or black mark on counterfeit bills. The Dri Mark Counterfeit Money Detector Pens work on all US currency issued after 1957. Counterfeit Money Detector Pens leave amber or yellowish mark is the bill is valid. Each pen tests about 10ꯠ bills. Make sure to cap all your Counterfeit Money Detector Pens after placing mark on money. Using Counterfeit Money Detector Pens is a very inexpensive and fast way to deter passing counterfeit. Available in packs of 3 or packs of 15. |