License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jugate heads of Marcus Aurelius (Marcus Aurelius Antoninus, 121–180) and Faustina (Anna Galeria Faustina, d. 175 or 176). probably 17th century. The Metropolitan Museum of Art.