License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Smith & Wesson. Smith & Wesson .44 Double-Action Frontier Model Revolver decorated by Tiffany & Co. (serial no. 8401), with Case and Cleaning Rod, ca. 1893. The Metropolitan Museum of Art.