License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Philips Galle. Apollo; statue of the nude god standing on a socle, wearing a crown and holding a scepter in his right hand and an orb in his left, plate 4 from "Statues of Roman Gods", 1586. The Metropolitan Museum of Art.