License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Hippolyte Flandrin. Miracle of St. Sylvester; the Raising of Two Pagan Priests, after Maso di Banco, S. Croce, Florence, 1835–38. The Metropolitan Museum of Art.