FLORENCE – MARCH 12: A view of a banner hanged showing the painting which might be hidden behind the Vasari wall on March 12, 2012 at its location in Florence’s Palazzo Vecchio during a press conference. Art sleuths taking part in a partly sponsored research by National Geographic and which has been controversial said on March 12, 2012 they believe they have found traces of a Leonardo Da Vinci masterpiece on a hidden wall of Palazzo Vecchio that has not been seen in over four centuries. (Photo by DARIO THUBURN/AFP/Getty Images)
