Leonardo da Vinci “Mona Lisa” (postcard reproduction) / pencil

(In 1919, artist Marcel Duchamp used a pencil to drew a mustache and beard on a cheap postcard reproduction of da Vinci’s iconic portrait. Beneath the image, he wrote “L.H.O.O.Q.,” which, when read aloud, sounds like “Elle a chaud au cul”, translated as “She has a hot ass,” or alternatively “there is fire down below.”

He later presented an untouched black and white reproduction of the Mona Lisa, mounted on card, as a work titled “L.H.O.O.Q., Shaved.”)