Purple LED UV Microlight Mini Ultraviolet Currency Counterfeit Fraud Bill Checker Purple UV Micro Light for Checking Counterfeit Currency. Excellent Bill Fraud Checker. UV Black light Mini Lamp can be used for Verifying all Banknotes incl. EUR, GBP and USD. Also great for checking Stamps, Documents such as Passports, Driving Licenses, Vehicle Registration Documents and Credit Cards etc. Potable Light, Multi Purpose use anywhere!