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. An old Polish nobleman wearing a plumed hat in center, standing in profile facing right, another Polish man to right in background, standing in profile facing left, plate 20 from "Diversi capricci", ca. 1644–47. The Metropolitan Museum of Art.