tsuba / sword-sheath / menuki / katana / hilt / habaki / fuchi-kashira / blade
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Katana (long sword blade) 1878,1230.840.a; habaki. Blade: made of steel; signed and dated. Habaki: single piece; with gold cladding.
Sword-sheath 1878,1230.840.b. Part of mounting for katana. Designs of plum blossoms formed from ray fish skin inlaid into black lacquer and polished flat. Made of wood; metal.
Hilt; fuchi-kashira; menuki 1878,0730.840.c. Part of mounting for katana. Fuchi-kashira and menuki: scenes from Genpei wars with Kumagai Naozane in shakudo with high-relief coloured metal inlay. Hilt: made of wood, skin (ray), braided textile.
Tsuba 1878,1230.840.d. Part of mounting for katana. War scenes pierced and roundly carved, with details in gold inlay. Made of copper overlaid and gilded iron.
- 1861 (eighth month; blade)
- Made in: Edo (blade)
- Length: 70.1 centimetres (cutting edge)
- Curvature: 1.4 centimetres
Inscription Positionblade, tang, obverse
Inscription TransliterationKofu [ni] oite Chojusai Tsunatoshi
Inscription TranslationChojusai Tsunatoshi, in Kofu [i.e. Edo]
Inscription Typesignature and date
Inscription Positionblade, tang, reverse
Inscription TransliterationChounsai Koretoshi Bunkyu gannen hachi gatsu kichi jitsu
Inscription TranslationChounsai Koretoshi, an auspicious day in the eighth month in the first year of the Bunkyu era 
This blade is 'shinogi zukuri', has a shallow curve and a small 'kissaki'. The unmodified tang has one hole and the file markings are 'kesho' with 'osujigai'. The grain is almost indiscernible, closely packed 'koitame'. The 'hamon' is an even 'suguha' in 'nie' with a tight 'nioiguchi'. The 'boshi' is 'komaru' with a somewhat pointed return.
This blade was the joint endeavour of Tsunatoshi and Koretoshi, who were father and son. Chojusai (originally Chounsai) Tsunatoshi (d. 1863) was the son of Kato Kunihide who studied under Suishinshi Masahide. Together with his brother Tsunahide, he moved from his native Ushu (Dewa) Province to go to Edo. His pupils include Unju Korekazu (see no. 67). In 1856 he gave the name Chounsai to his son Koretoshi, and assumed the name Chojusai. The habaki is comprised of a single piece, and has gold cladding.
The scabbard has designs of plum blossoms formed from ray fish skin inlaid into black lacquer and polished flat. The 'fuchi', 'kashira' and 'menuki' have scenes from the Gempei wars in 'shakudo' with high-relief coloured metal inlay. The iron 'tsuba' has similar scenes pierced and roundly carved, with details in gold inlay.
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Object reference number: JCR5172
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