The thread is embedded in (not printed on) the paper and operates vertically with the crystal clear field to your remaining on the Federal Reserve Seal. On reliable bills, this should be simply visible in opposition to a light-weight supply. A counterfeit banknote detection pen, used to detect fake banknotes https://fakemoneynotestoprint13135.bluxeblog.com/60046300/what-does-fake-currency-notes-in-india-mean