"The Unknown" is an etching and drypoint by the French artist Félix Bracquemond, a master printmaker of the 19th century known for his refined technique and delicate handling of light and shadow. The work exemplifies Bracquemond's skill in combining the linear precision of etching with the softer, more expressive marks possible through drypoint, creating subtle tonal variations across the composition. As a leading figure in the etching revival movement, Bracquemond used these traditional intaglio techniques to produce works of considerable sophistication and artistic merit.