Attributed to Masakuni Muromachi period (1333-1573), 16th century Of honzukuri, iorimune configuration with toriizori curvature and an extended kissaki, forged in itame hada mixed with mokume hada and with a notare-gunome midare tempered edge, the omote side very active with tobiyaki and muneyaki, with nie, ashi, saka-ashi, yo, kinsuji and sunagashi, and a midare komi boshi, both sides carved with bohi, the suriage nakago with kiri file marks, four holes (two plugged), and signed Kyushu Higo Dotanuki, with a one-piece copper habaki, 25 1/16in (63.7cm) long; in a wood shirasaya storage scabbard