License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Anonymous, Italian, 16th century. Hercules Colossus at Padua (L'Ercole di casa Benavides a Padova), from "Speculum Romanae Magnificentiae", 1553. The Metropolitan Museum of Art.