License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Anonymous, Italian, Piedmontese, 18th century. Halved Variant Designs for an Altar with the Virgin of the Immaculate Conception in the Central Cartouche, 1700–1780. The Metropolitan Museum of Art.