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.
Mona Lisa replicas and reinterpretations
Radio personality Bruce Morrow presided over a promotional event during "Mona Lisa"'s exhibition in New York City. 70,000 entries of a "Best Mona" painting contest were exhibited at the Polo Grounds, with Salvador Dalí helping to pick the winner.
Following the painting's first American presentation, Andy Warhol in 1963 created multiple renditions in his screen-print Pop art style.