Leonardo da Vinci, who died on May 2, 1519 at the age of 67, began around 40 paintings in his lifetime, of which fewer than 20 survive. Of those that survive, only about 15 are believed to be complete.

The artist painted only four known portraits of women:

• Ginevra de’ Benci at the National Gallery of Art in Washington, D.C.
• La Belle Ferronnière at the Louvre Museum in Paris.
• Mona Lisa also at the Louvre Museum in Paris.
• Cecilia Gallerani (known as “Lady with an Ermine“) at the Czartoryski Museum in Krakow, Poland.

Cecilia Gallerani was the mistress of Ludovico Sforza, Duke of Milan, and was painted while da Vinci worked in the Duke’s court in Milan, Italy. The Polish government paid 100 million Euros for the painting in 2016.

Trivia: Many believe that Leonardo da Vinci continuously reworked the Mona Lisa throughout his life; it was still in his possession when he died. The fact that the Mona Lisa does not have eyebrows suggests, to me, that the painting was still unfinished. The absence of eyebrows in the Mona Lisa has led to other theories as well:

• Others argue that da Vinci might have intentionally left them out for artistic reasons.
• There’s also the theory that the eyebrows might have faded over time due to the varnish or other conservation issues.

Source: Leonardo da Vinci by Walter Isaacson, 2017. Graphic: Lady with and Ermine by da Vinci, public domain.