> All you need to verify a stack of $100 bills is a $5 marker. Those do not work. https://en.wikipedia.org/wiki/Counterfeit_banknote_detection_pen https://en.w

> All you need to verify a stack of $100 bills is a $5 marker. Those do not work. https://en.wikipedia.org/wiki/Counterfeit_banknote_detection_pen https://en.wikipedia.org/wiki/Counterfeit_banknote_detection...