YASUTSUGU LINEAGE A Musashi Katana in Mounts Edo period (1615-1868), 17th century Honzukuri, iorimune, chū-gissaki, toriizori forged in itame hada with a chōji gunome midare tempered edge with nie, saka-ashi, sunagashi, and tobiyaki ending in a midare komi bōshi, the ō-suriage tang with one hole and katte sagari file marks, signed Nanban tetsu oite Bushū Edo Echizen Yasutsugu, with a one-piece gilt habaki; the koshira-e comprising an ishimeji black-lacquer saya decorated with family crests in bl