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How To Spot A Counterfeit Bill - Tien Nguyen

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Channel: TED-Ed
Categories: Economics   |   How-To   |   Social Science   |   Technology  
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View full lesson: http://ed.ted.com/lessons/how-to-spot-a-counterfeit-bill-tien-nguyen Authentic dollar bills are equipped with many security features to make them difficult to forge. But...

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  • addison Added i didnt realy like it but its ok i guess
  • Mayafd9 Banned Added This video was really cool!









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