La Joconde est Retrouvée (Mona Lisa is Found), Le Petit Parisien, 13 December 1913
On 21 August 1911, the painting was stolen from the Louvre. The theft was not discovered until the next day, when painter Louis Béroud walked into the museum and went to the Salon Carré where the Mona Lisa had been on display for five years, only to find four iron pegs on the wall. Béroud contacted the head of the guards, who thought the painting was being photographed for promotional purposes. A few hours later, Béroud checked back with the Section Chief of the Louvre who confirmed that the Mona Lisa was not with the photographers. The Louvre was closed for an entire week during the investigation.
Vacant wall in the Salon Carré, Louvre after the painting was stolen in 1911
French poet Guillaume Apollinaire, who had once called for the Louvre to be “burnt down”, came under suspicion and was arrested and imprisoned. Apollinaire implicated his friend Pablo Picasso, who was brought in for questioning. Both were later exonerated. Two years later the thief revealed himself. Louvre employee Vincenzo Peruggia had stolen the Mona Lisa by entering the building during regular hours, hiding in a broom closet, and walking out with it hidden under his coat after the museum had closed. Peruggia was an Italian patriot who believed Leonardo’s painting should have been returned for display in an Italian museum.
Peruggia may have been motivated by an associate whose copies of the original would significantly rise in value after the painting’s theft. A later account suggested Eduardo de Valfierno had been the mastermind of the theft and had commissioned forger Yves Chaudron to create six copies of the painting to sell in the U.S. while the location of the original was unclear. However, the original painting remained in Europe. After having kept the Mona Lisa in his apartment for 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 1956, part of the painting was damaged when a vandal threw acid at it. On 30 December of that year, a rock was thrown at the painting, dislodging a speck of pigment near the left elbow, later restored.
The use of bulletproof glass has shielded the Mona Lisa from subsequent attacks. In April 1974, while the painting was on display at the Tokyo National Museum, a woman sprayed it with red paint as a protest against that museum’s failure to provide access for disabled people. On 2 August 2009, a Russian woman, distraught over being denied French citizenship, threw a ceramic teacup purchased at the Louvre; the vessel shattered against the glass enclosure. In both cases, the painting was undamaged.