According to Economics Stack Exchange, a site for those who study, teach and research economic issues: "The U.S. Bureau of Engraving and Printing creates all of the nation's bills, while the U.S. mint creates its coins. But they also destroy money. Banks and individuals will hand over 'mutilated' bills and coins to these agencies. They then validate its authenticity and issue a Treasury check in return. The Bureau of Engraving and Printing receives around 25,000 mutilated currency redemption claims annually. Each bill is shredded and sent to waste energy facilities for disposal." … [Read more...] about Why Do Some U.S. Bills Have a Star at the End of the Serial Number?