License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Ercole Procaccini The Younger. Fragment of a Design for an Overdoor with Seated Angel Supporting Cartouche, and Seated Putto Holding Garland (recto); Fragments of a Cartouche? (verso), 17th century. The Metropolitan Museum of Art.