License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Isidore Pils. Monk (lower register); verso: Drapery Study for a Bishop (lower register); (studies for wall paintings in the Chapel of Saint Remi, Sainte-Clotilde, Paris, 1858), 19th century. The Metropolitan Museum of Art.