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 Comédien Masqué Jouant de la Guitare (The Masked Comedian Playing the Guitar), 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.