A Gassan katana
Edo period (19th century), unsigned, attributed to Sadayoshi
Sugata [configuration]: Slender hon-zukuri, deep curve, iroi-mune, chu-gissaki
Kitae [forging pattern]: O-itame nagare with masame, copious ji-nie
Hamon [tempering pattern]: Choji with many ashi, kinsuji, fine sunagashi, with predominantly gunome in the upper part, of nioi with ko-nie
Boshi [tip]: Slight notare-komi with yakitsume
Nakago [tang]: Ubu two overlapping mekugi-ana, one of which filled with copper, osujigai with kesho file marks
Habaki [collar]: Single copper
Koshirae [mounting]: Katana mounting, the saya lacquered brown with irregular linear shapes outlined in itobori with gold powder surikomi zogan, black horn kojiri, round iron tsuba with stylized wave forms and falling leaves, and circular arrays of inlaid brass dots, iron fuchigashira carved with dragonfly, menuki sets of three lightly gilt paulownia crests
Accompanied by a certificate of registration as a Hozon token (Sword worthy of preservation) no. 377402 issued by the Nihon Bijutsu Token Hozon Kyokai (Society for the Preservation of the Japanese Art Sword), 2007.6.29
A Gassan katana
Edo period (19th century), unsigned, attributed to Sadayoshi
Sugata [configuration]: Slender hon-zukuri, deep curve, iroi-mune, chu-gissaki
Kitae [forging pattern]: O-itame nagare with masame, copious ji-nie
Hamon [tempering pattern]: Choji with many ashi, kinsuji, fine sunagashi, with predominantly gunome in the upper part, of nioi with ko-nie
Boshi [tip]: Slight notare-komi with yakitsume
Nakago [tang]: Ubu two overlapping mekugi-ana, one of which filled with copper, osujigai with kesho file marks
Habaki [collar]: Single copper
Koshirae [mounting]: Katana mounting, the saya lacquered brown with irregular linear shapes outlined in itobori with gold powder surikomi zogan, black horn kojiri, round iron tsuba with stylized wave forms and falling leaves, and circular arrays of inlaid brass dots, iron fuchigashira carved with dragonfly, menuki sets of three lightly gilt paulownia crests
Accompanied by a certificate of registration as a Hozon token (Sword worthy of preservation) no. 377402 issued by the Nihon Bijutsu Token Hozon Kyokai (Society for the Preservation of the Japanese Art Sword), 2007.6.29