A gassaku (合作, gassaku) katana, a joint work by two smiths of the Mishina school of Kyoto: Iga no Kami Kinmichi, the third generation according to the original seller, and Tanba no Kami Yoshimichi, the fourth generation of the Kyoto line. Both houses descend from Kanemichi, who moved from Mino to Kyoto. The blade, with a nagasa of 69.5 cm and a sori of about 2 cm, has the Genroku-era shape: wide, with a thick kasane and a chū-kissaki, and bo-hi maru-dome on both sides, as the photographs show; they also show an undulating hamon of notare and gunome. According to the original seller, the jigane is itame with abundant ji-nie and chikei, the hamon carries kinsuji and sunagashi, and the bōshi turns back in komaru. The tang, intact judging by the photographs and with one mekugi-ana, bears on the omote the eda-kiku crest and the signature 日本鍛冶惣領宗匠伊賀守藤原金道 (Nihon kaji sōryō sōshō Iga no Kami Fujiwara Kinmichi), and on the ura the same crest and 丹波守吉道 (Tanba no Kami Yoshimichi). It is kept in a shirasaya with a sayagaki by Dr. Satō Kanzan and a gold-foiled double habaki. The original seller declares NBTHK Tokubetsu Hozon papers. No koshirae is included.