3 ms·

Serial numbers I assume?

• pas 6y ago
  What do you mean? You would need to track every bill and simultaneously find two matching ones, and now you know one of them is a counterfeit but which one?
  • boomboomsubban 6y ago
    The bills weren't perfect, just nearly perfect. There are issues like one line in the art being printed too distinctly.
  • Leherenn 6y ago
    You don't really need to know which one is which (and if the counterfeit one is perfect, does it even matter?). But if you have 2 bills with the same SN, then you know someone is creating perfect counterfeited bills.