License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Georg Pencz. Tomyris, shown nude from behind, placing the head of Cyrus into a sack held by a soldier, the decapitated body of Cyrus on the ground at her feet, from "Four Mythological Scenes", ca. 1539. The Metropolitan Museum of Art.