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