Isleworth Mona Lisa
According to Leonardo's early biographer Giorgio Vasari, Leonardo had started to paint "Mona Lisa" in 1503, but "left it unfinished". However, a fully finished painting of a "certain Florentine lady" surfaced again in 1517, shortly before Leonardo's death and in his private possession. The latter painting almost certainly is the one that now hangs in the Louvre. Based on this contradiction, supporters of the authenticity of the "Isleworth Mona Lisa" claim it is the unfinished "Mona Lisa", made at least partially by Leonardo, and the Louvre "Mona Lisa" a later version of it, made by Leonardo for his own use.
The Incredible Adventures of Jack Flanders
There is a running joke concerning the Mona Lisa and in particular the artist Marcel Duchamp - famous for painting a parody of the Mona Lisa with a mustache and goatee. After Jack first encounters a Wanted poster for the sky pirate 'The Black Mona Lisa' and causes a mustache to appear on her image as a result, he tries to hide his own identity by using the pseudonym of Marcel Duchamp. Later he and the 'Marquis of Carumbas' are busking in the realm of the 'Never Mind' and the Marquis introduces Jack's act as "Nude Descending a Staircase", another work by Marcel Duchamp.Produced at the ZBS Studios, Fort Edward, NY