License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Anonymous. Reverse Copy of La Course de Chevaux sur la Place Pitti a Florence (The Horse Race at the Piazza Pitti in Florence), from "Les Caprices", Series A, The Florence Set, 17th century. The Metropolitan Museum of Art.