License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. Le Duelliste a L'Épée et au Poignard (The Duelist with a Sword and Daggar), from "Varie Figure Gobbi, suite appelée aussi Les Bossus, Les Pygmées, Les Nains Grotesques" (Various Hunchbacked Figures, The Hunchbacks, The Pygmes, The Grotesque Dwarfs), 1616–22. The Metropolitan Museum of Art.