A Soshu o-tanto Muromachi period (1333-1573), 16th century Of hirazukuri, iorimune configuration with a toriizori curvature and forged in itame hada mixed with mokume hada, the tempered edge large choji midare and some hitatsura with nie, ara-nie, ashi and sunagashi ending in a ko-maru boshi with a long return, the omote side carved with bonji ni suken and the ura with bohi, the tanagobara tang slightly machi-okuri with indistinct file marks, two holes, and signed Masahiro, with a one-piece gold-foil habaki, 13 7/8in (35.2cm) long, in a wood shirasaya storage scabbard