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. Polish horseman with a bow and arrow, seen from behind with his horse facing right, a circular composition, from "Figures on Horseback" (Cavaliers nègres, polonais et hongrois), ca. 1651. The Metropolitan Museum of Art.