Nowadays some of the finest counterfeit banknotes are called Superdollars on account of their superior quality, and likeness into the real US dollar. The sources of this kind of supernotes are disputed, with North Korea getting vocally accused by US authorities. Of course, it may sense much like authentic bills. https://socialmediastore.net/story17263757/not-known-facts-about-counterfeiting-money-in-the-usa