License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Anonymous, Italian, 15th to 16th century. Ornamental Design after the Antique; Bands of Acanthus Rinceaux, Figurated Palmettes, and Shell Cartouches, 15th–16th century. The Metropolitan Museum of Art.