Imagem do dia: Uma copia da "Mona Lisa" pintada por um dos alunos do Leonardo da Vinci.

A copy of the "Mona Lisa" is seen on display in Spain's Prado Museum in Madrid Tuesday Feb. 21, 2012. The "Mona Lisa" copy which went on display Tuesday was painted by one of Leonardo da Vinci's apprentices alongside the master himself as he did the original, museum officials said. AP Photo/Paul White.