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. Colossal statue of the Appenino by Giambologna, from "Views of the villa at Pratolino" (Vues de la villa de Pratolino), ca. 1653. The Metropolitan Museum of Art.