License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Abu'l Qasim Firdausi. "Rustam Brings the Div King to Kai Kavus for Execution", Folio 127v from the Shahnama (Book of Kings) of Shah Tahmasp, ca. 1525–30. The Metropolitan Museum of Art.