License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
René Boyvin. Medea Kills her Two Children by Jason (Pour qui d'Absyrte a le sang repandu, fait que du sien le tort lui soit rendu...), from "Jason and the Golden Fleece", 1563. The Metropolitan Museum of Art.