License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. Une Fête sur la Place de la Signoria a Florence (A Festival in the Piazza della Signoria in Florence), from "Les Caprices" Series B, The Nancy Set, 1617–20. The Metropolitan Museum of Art.