License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Stefano della Bella. A bust of a young man wearing a cap with feathers, turned three-quarters to the left, the coat of arms of the Grand Duke of Tuscany in top left, title page from "Several heads in the Persian style" (Plusieurs têtes coiffées à la persienne), 1650. The Metropolitan Museum of Art.