Mona Lisa two years, Peruggia grew impatient and was caught when he attempted to sell it to directors of the Uffizi Gallery in Florence. It was exhibited in the Uffizi Gallery for over two weeks and returned to the Louvre on 4 January 1914. Peruggia served six months in prison for the crime and was hailed for his patriotism in Italy. Before its theft, the "Mona Lisa" was not widely known outside the art world. It was not until the 1860s that some critics, a thin slice of the French intelligentsia, began to hail it as a masterwork of Renaissance painting. In
Vincenzo Peruggia forger Yves Chaudron to make copies of the painting so he could sell them as the missing original. The copies would have gone up in value if the original were stolen. This theory is based entirely on a 1932 article by former Hearst journalist Karl Decker in "The Saturday Evening Post". Decker claimed to have known "Valfierno" and heard the story from him in 1913, promising not to print it until he learned of Valfierno's death. There is no external confirmation for this tale. Vincenzo Peruggia Vincenzo Peruggia (October 8, 1881 – October 8, 1925) was an Italian thief, most