A carbon-coated portrait of a naked woman known as Monna Vanna (beware if you put this expression on Google, finds the wrong picture), kept in the Condé Museum since 1862, was always attributed to the Leonardo da Vinci School alone. Experts, however, have enough evidence to say peacefully that da Vinci was working on the painting itself. Leonardo, who stands behind the painting of the world-renowned and enchanting Mona Liza, one of the most precious paintings in the world, apparently created another painting that has so far attributed to the unknown creator.