How old was leonrdo da vince when he drew the Mona Lisa?

Leonardo da vinci began painting The Mona Lisa around 1503 and continued working on it for several years. He was born on April 15, 1452, which would make him approximately 51 years old when he started the painting. It is believed that he may have continued to refine it until around 1517, making him about 65 years old at that time.