License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jeremias Wachsmuth. Design for a Cartouche, plate 3 from "Neü inventierte sehr dienstiche Schilde oder Cartouches", printed ca. 1750–56. The Metropolitan Museum of Art.