This is a vintage anatomical illustration of a human head, showcasing the underlying muscle structure. The head is depicted in profile, with one side showing the skin and the other revealing the muscles and skull beneath. The muscles are rendered in shades of red and brown, creating a stark contrast against the pale skull and skin. The eye is open and appears to be gazing forward. The ear is detailed, and the nose and mouth are partially visible. Below the illustration is a key with letters and corresponding anatomical terms, labeling the different muscles and structures. The style is reminiscent of historical medical texts, with a focus on detailed accuracy and scientific representation. The overall tone is serious and educational, reflecting the purpose of the illustration as a tool for anatomical study.