TADATSUNA I (ACTIVE CIRCA 1658-1661) A Setsu Katana in Mounts Edo period (1615-1868), circa 1660 Of honzukuri, iorimune, chū-gissaki, toriizori configuration forged in itame hada with a flamboyant chōji midare tempered edge ending in an ō-maru bōshi, chiseled with bōhi on both sides, the machiokuri tang with two holes, katte sagari file marks, and signed Awataguchi Ōmi no kami Tadatsuna, with a one-piece gilt habaki; the 19th-century koshira-e comprising a hardwood saya carved on the surface wit