An Osaka katana in uchigatana mounts with Ko-Goto fittings Edo period (1615-1868), 17th century Honzukuri, iorimune, chu-gissaki, koshizori configuration forged in itame hada with a notare tempered edge and a ko-maru boshi, the suriage tang with two holes, indistinct filemarks and signed Tanba no kami Yoshimichi, with a one-piece gilt-copper habaki, 23 3/4in (60.3cm) long The uchigatana goshira-e mounted with matching Goto-school shakudo nanakoji fittings decorated with rain dragons in takabori with gold highlights, including fuchigashira, o-seppa, menuki and san-mai awase mokko tsuba, the black-lacquer ishimeji saya fitted with semegane and sayajiri decorated to match The koshira-e with Hozon Tosogu (Sword Fitting Worthy of Preservation) certificate no. 456555 issued by the Nihon Bijutsu Token Hozon Kyokai (Society for the Preservation of the Japanese Art Sword), dated October 27, 2008