Mona Lisa 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
Vincenzo Peruggia in his court during the 16th century, 250 years before Napoleon's birth. Experts have questioned the 'patriotism' motive on the grounds that—if 'patriotism' was the true motive—Peruggia would have donated the painting to an Italian museum, rather than have attempted to profit from its sale. The question of money is also confirmed by letters that Peruggia sent to his father after the theft. On December 22, 1911, four months after the theft, he wrote that Paris was where "I will make my fortune and that his (fortune) will arrive in one shot." The following year (1912), he wrote: "I am