License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
José Guadalupe Posada. A skeleton in a torero costume turning away from a kneeling skeleton in a shawl and dress, from the broadside "El gran panteón amoroso", ca. 1894. The Metropolitan Museum of Art.