License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Georg Pencz. Triumph of Chastity: unicorns draw a carriage bearing a female figure seated next to a sphinx and holding a standard, Vestal virgins walk behind the carriage, round temple of Vesta at right, from "The Triumphs of Petrarch", ca. 1539. The Metropolitan Museum of Art.