By Yasutsugu, Edo Period (1615-1868), 17th/18th century The blade of shinogi-zukuri form with torii-zori, chu-gissaki, and iori-mune, notare-ha of nie and nioi, itame-hada, komaru-boshi, the omote side with a horimono (carved image) of Fudo Myo-o wielding a sword and surrounded by flames, the ura side carved with a bonji (Sanskrit character) and suken (double-edged straight sword), the ubu-nakago with one mekugi-ana, signed Nanban tetsu o motte Echizen Yasutsugu, Bushu Edo ni oite kore o saku (Echizen Yasutsugu made this at Edo in Musashi Province using Nanban iron) and a carved mitsuba aoi mon (triple-hollyhock crest), in shirasaya (plain wood scabbard); the saya (scabbard) lacquered black with densely-sprinkled aogai nashiji (sprinkled mother-of-pearl) and inlaid with small flying birds of shell, the tsuba (sword guard) shakudo with inlaid gilt floral details, signed Furukawa Genchin with a kao, fuchigashira (matching hilt collar and pommel), menuki (paired hilt ornaments), kogai (skewer), and kozuka (knife handle) also shakudo with inlaid gilt floral details, the kogatana gilt-bronze with bonji, the kurikata (knob for tying cord), kojiri (scabbard tip), kaeshizuno (hook to secure scabbard) of gilt-metal nanako ('fish-roe' dot pattern). The saya: 72cm (28 1/4in) long; the blade: 50.2cm (19 3/4in) long. (2).