License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Albrecht Dürer. The Marriage of Philip the Fair to Joanna of Austria; Maximilian Recaptures the Occupied Territories from Hungary; The Conquest of Hungary; The Swiss War; The Liberation of Naples; and The Battle of Wenzenberg, from the Arch of Honor, proof, dated 1515, printed 1517-18, 1515. The Metropolitan Museum of Art.