License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Stefano della Bella. Plate 15: a Polish nobleman, facing away, holding his horse covered in leopard skin, four men and a horse in background, from "Diversi Capricci", ca. 1644–47. The Metropolitan Museum of Art.