The Anatomy Lesson of Dr. Nicolaes Tulp is a 1632 oil-on-canvas painting by Rembrandt housed in the Mauritshuis museum in The Hague, Netherlands. The painting is regarded as one of Rembrandt's early masterpieces. In the work, Nicolaes Tulp is pictured explaining the musculature of the arm to a group of doctors. Some of the spectators are various doctors who paid to be included in the painting. The painting is signed in the top-left hand corner Rembrandt. f[ecit] 1632. This may be the first instance of Rembrandt signing a painting with his forename (in its original form) as opposed to the monogram RHL ("Rembrandt Harmenszoon of Leiden"), and is thus a sign of his growing artistic confidence.Painting credit: Rembrandt