An underground counterfeiting operation appears to continue with $100 'supernote' bills popping up worldwide.
The 'supernote' appears to be made from the same cotton and linen mix that distinguishes U.S. currency from other currency. It even has 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 secret operation, stumping officials worldwide, could be the "most sophisticated counterfeiting operation in the world," former congressman James Kolbe said.
In the late 1990s, North Korean diplomats were caught passing supernotes. In August 2005, the Secret Service found Chinese crime gangs smuggling some of the bills into New Jersey and Los Angeles.
Meanwhile, banks continue seizing the supernotes, with about $50 million worth found so far.
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