License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Mathäus Küsel. Throne room with a man in classical armor standing at center addressing a man seated on a throne at left; soldiers lined on either side of the room; set design from 'Il Fuoco Eterno', 1674. The Metropolitan Museum of Art.