Self-Portrait by Leon Battista Alberti https://www.nga.gov/artworks/43845-self-portrait
A humanist and polymath, Alberti in his treatises laid theoretical foundations for Renaissance painting, sculpture, and architecture. This relief is a milestone in the history of portraiture, and it is the earliest independent self-portrait.
Gallery of Art Dreyfus, Gustave Exhibition History 1865 Musée Rétrospectif, Union