The U.S. government continues its changes to U.S. currency M-{ intended to thwart counterfeiting M-{ with a new look for the $50 bill. The new bills went into circulation yesterday.
Security thread: a plastic strip embedded in the paper with M-tUSA 50M-v written on it; glows yellow under ultraviolet light
Color-shifting ink: the M-t50M-v changes from green to copper when the note is tilted
Color: Subtle background colors, reds and blues, added


