Amazon.co.jp: Smart Money Counterfeit Bill Detector Pen for Use w/U.S. Currency, 3/Pack (並行輸入品) : 文房具・オフィス用品
Amazon.com : Dri Mark Dual Test - The Original Counterfeit Detection Marker Pen with UV LED Cap, Tests for Security Strips and Authentic Currency Paper - 4 UV Light/Pen Combinations Plus 2