License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Antonio Tempesta. Plate 24: The Warring Men Born of the Serpent's Teeth (Militum Seges e draconis dentium seminio), from Ovid's 'Metamorphoses', 1606. The Metropolitan Museum of Art.