License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jacques de Gheyn II. A soldier on guard freeing his right hand, from the Marksmen series, plate 37, in "Wapenhandelinghe van Roers Musquetten Ende Spiessen" (The Exercise of Arms). The Metropolitan Museum of Art.