License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Mathäus Küsel. A shore framed by rocks, with Neptune in his chariot on the left and Salacia in hers on the right; at center, a ship caught in a storm; set design from 'Il Pomo D'Oro', 1668. The Metropolitan Museum of Art.