License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Giovanni Battista Tiepolo. Three figures and a snake coiled around a staff, surrounded by a landscape, the central figure rests his left hand on a shield and leans toward a bearded figure holding a book, from "The Capricci", 18th century. The Metropolitan Museum of Art.