Portrait 

This portrait by American realist painter Thomas Eakins, known for his anatomical accuracy and attention to detail, depicts a man with a prominent mustache and a somber expression. Eakins was a prominent figure in American art during the late 19th century, known for his realist depictions of everyday life. This portrait, likely of an unknown individual, exemplifies Eakins's masterful handling of light and shadow, creating a sense of depth and realism.