The new US$100 bill will go into circulation on October 8, 2013. New security features include a “3-D Security Ribbon” woven into the paper. The image changes from bells to 100s with the viewing angle, and “color-shifting” bell graphic that changes from copper to green, “an effect which makes the bell seem to appear and disappear within the (copper-colored) inkwell.” ” The Redesigned $100 Note ”        

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New US$100 bill in circulation 10/8