A Rai-school tanto Kamakura period (1185-1333), 13th/14th century Of hirazukuri, iorimune configuration with a slight sakizori curvature, forged in ko-itame hada mixed with mokume hada based in jinie, the tempered edge a gentle notare with a wide nioiguchi with nie and sunagashi and yakiotoshi on the omote side, the tip with hakikake, the machiokuri tang with indistinct file marks, four holes (two plugged) and signed Rai Kunitoshi, with a one-piece silver habaki finished in a crepe pattern, 10 1/16in (25.6cm) long; in a wood shirasaya storage scabbard