Popular Science -
8 Oct 2013 16:00
$100 Bill Courtesy Department of the Treasury The $100 bill is the most widely circulated U.S. denomination abroad and, because it's almost universally accepted, the most counterfeited one outside our borders. A new Benjamin goes into circulation today with security updates: a ribbon with images that move when the bill is tilted and a drawing that changes colors depending on its angle (these in addition to more than six other anticounterfeiting features). But the U.S. isn't the only nation conce...
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