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. Two friezes; at top, an eagle and the head of a lion, at bottom, a lion head and two grotesque heads of men, plate 7 from "Friezes, foliage, and grotesques" (Frises, feuillages et grotesques), ca. 1638–43. The Metropolitan Museum of Art.