Style of Yanagawa Naomasa A silver and gilt kozuka Edo period (1615-1868), 19th century The front of silvered metal and the reverse gilt with nekogaki striations, the front deeply chiseled and with flat inlay of shakudo and gilt, depicting the accouterments of a Japanese matchlock gun including powder horn, primer cord, and shot holder, with signature Yanagawa Naomasa and a kao With a wood storage box