License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Pierre Audouin. Las Meninas: the family of Philip IV in the foreground with the Infanta Margarita in the centre, Velázquez standing painting at left, the King and Queen reflected in the mirror in the background, 1799. The Metropolitan Museum of Art.