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Pedestrians pass a building decorated with the Argentine national flag in Buenos Aires' financial district earlier this summer. Eitan Abramovich/AFP/Getty Images hide caption

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Eitan Abramovich/AFP/Getty Images

A banner depicting Venezuela's currency, the bolivar, at the central bank of Venezuela in Caracas in January. The bolivar has lost the vast majority of its value in just the last year. Federico Parra /AFP/Getty Images hide caption

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Federico Parra /AFP/Getty Images

The redesigned U.S. $100 bills that went into circulation in 2013 incorporate technology that features several visual illusions, all designed to foil counterfeiters. Brendan Smialowski/AFP/Getty Images hide caption

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Brendan Smialowski/AFP/Getty Images

Like Magic: The Tech That Goes Into Making Money Harder To Fake

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European Union and U.K. Union Jack flags hang at a meeting for U.K. citizens living in Germany to discuss the implications of the proposed "Brexit" from the EU. Adam Berry/Getty Images hide caption

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Adam Berry/Getty Images

Jacob "Jack" Lew's signature, on the 2012 "Mid-Session Review" of the federal budget. He was director of the Office of Management and Budget at the time. hide caption

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Hand-run printing presses like these in 1909 produced 45 sheets an hour, while today's automated machines churn out 10,000 in the same amount of time. "This was considered the toughest job at the time," said Franklin Noll, a historical consultant at the U.S. Bureau of Engraving and Printing. "You had to work as fast as you could all the time on a rate where you only got paid for the good sheets." Library of Congress hide caption

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Library of Congress