When did Leonardo Da Vinci finish painting the Mona Lisa?

Elimina's has managed to answer most of you question but I'd like to point out a couple of errors. Firstly the famous bearded portrait often thought to be a self portrait of Leonardo was made using red chalk. Secondly and most importantly, being an art historian and having studied Leonardo's work for many years, | would argue that there is are surviving self portraits of the artist. Leonardo appears to have depicted himself in his unfinished Adoration of the Magi. Here's a link to the painting. <a href="http://www.universalleonardo.org/worklarge.php?id=342&image=0&trail=0&trailCount=&name=" rel="nofollow">http://www.universalleonardo.org/worklar...</a> Leonardo is possibly the young man on the far right of the work. You may think that he looks young here well he was. Also if you compare this painted young man to Verrocchio's David which Leonardo could have modeled for, being Verrocchio's pupil, you will see an astonishing similarity. Here's the link to an image of the sculpture. <a ...  more