There is another saying believed the <Mona Lisa> which has been collected by the Louvre Museum is an imitation according to the theft happened in year 1911. in the case, <Mona Lisa> has been stolen. after two years it apeared in Italy, but the two pillars behind Mona lisa have been cut away. after several years it was returned to the Louvre. Therefore Many expert considered that the returing was just a smork screen. the truth was the original <Mona Lisa> has been sold to a wheathy collector for a big fund.