This Is Interesting

Mysterious $100 ‘supernote’ counterfeit bills appear across world.

•The paper appears to be made from the same cotton and linen mix that distinguishes U.S. currency from others. It includes the watermarks visible from the other side of the bill, colored microfibers woven into the substrate of the banknote and an embedded strip, barely visible, that reads USA 100 and glows red under ultraviolet light.

•The bills include tiny microprint that appears as a line to the naked eye, but under magnification is actually lettering around the coat of Benjamin Franklin or hidden in the number 100 that reads either USA 100 or The United States of America.

•The same optically variable ink, or OVI, is used on the number 100 on the bottom right side of the bill. Exclusively made for, and sold to, the United States, this OVI ink gives the appearance of changing color when a banknote is viewed from different angles.

•At least 19 different versions have been printed, each corresponding to a tiny change in U.S. engraving plates — an odd thing for any counterfeiter to do. Also, they show practically invisible but intriguing additions.

•Stranger yet, the number of supernotes found indicates that whoever is printing them isn’t doing so in large quantities. Only $50 million worth of them have been seized since 1989, an average of $2.8 million per year and not even enough to pay for the sophisticated equipment and supplies needed to make them.

If that isn't interesting enough...

The oddities do not stop there. Whoever is making them seemed to deliberately add minuscule extra strokes, as if trying to flag the phony bills, the Swiss noted. For example, at the very tip of the steeple of Philadelphia’s Independence Hall, the counterfeit bills have a line along the left vertical edge that is not on the real bills.