Attributed to Izu no kami Masafusa (active circa 1615) Momoyama (1573-1615) or Edo (1615-1868) period, early 17th century The robust blade of honzukuri, iorimune, chu-gissaki configuration with a shallow toriizori curvature, forged in itame hada and with a gunome midare tempered edge with nie, ara-nie, sunagashi and tobiyaki ending in a hakikake boshi, carved with bohi on both sides, with a two-piece silver habaki, 20 1/4in (51.4cm); in a wood shirasaya storage scabbard With Hozon Token (Sword Worthy of Preservation) certificate no. 369436 issued by the Nihon Bijutsu Token Hozon Kyokai (Society for the Preservation of the Japanese Art Sword), dated December 21, 2004