License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques Callot. Les Deux Turcs Coiffés d'un Turban Avec un Aigrette (Two Turks Wearing Turbans with an Egret Feather), from "Varie Figure" (Various Figures), ca. 1620. The Metropolitan Museum of Art.