License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jules-Edmond-Charles Lachaise. Design for Rococco-style wall and cove ornament in the salon of the Hotel de Luynes, owned by the Duc de Sabran, second half 19th century. The Metropolitan Museum of Art.