US-ECONOMY-FINANCE-CURRENCY

A close-up photo of the United States 50-dollar bill bearing a detail from the portrait of Ulysses S. Grant, the 18th President of the United States, is seen on December 7, 2010 in Washington, DC. The note reveals one of the security features of "micro-printing" with the words "The United States of America" written on his shirt collar. The micro-printing can not be seen by the naked eye without magnification. The security features found in United States currency are selected after extensive testing and evaluation of hundreds of bank note security devices, many of which are used successfully by other countries with lower production and circulation demands. AFP PHOTO / Paul J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/GettyImages)