Portrait of the Marquis de Sade (Charles-Amédée-Philippe van Loo)
From The Art and Popular Culture Encyclopedia
Portrait of the Marquis de Sade (c. 1761) by Charles-Amédée-Philippe van Loo is a half-length portrait in profile of the Marquis de Sade. It is a charcoal drawing, round in shape. It was reproduced in the journal Obliques n° 12-13, from the collection of Robert Lebel. It is the only portrait that Sade is believed to have actually sat for. The existence of this portrait only became known after WWII.
The book Le langage de l'obscénité: étude stylistique des romans de DAF de Sade calls it Portrait du Marquis de Sade vers l'âge de vingt ans. The portrait is also known as Un portrait présumé du marquis de Sade jeune.
Some sources state that it is in the collection of Xavier de Sade.