| Product No. KA-0771 於江府加藤綱俊造之 | |
|---|---|
| Mei |
於江府加藤綱俊造之 Made by Kato Tsunahide at Efu Back: 安政二歳八月吉日 On an Auspicious Day in August 1855, the 2nd Year of Ansei |
| Shape | Shinogizukuri Iorimune |
| Region | Yonezawa, Dewa Province |
| Era | Bakumatsu Period |
| Length |
70 cm 27.6 in |
| Sori (curvature) |
2.1 cm 0.8 in |
| Motohaba |
3 cm 1.2 in |
| Sakihaba |
2 cm 0.8 in |
| Munekasane |
0.8 cm 0.3 in |
| Status | Tokubetsu Hozon Token |
| Certification Date | Passed the Shinsa in June 2025 |
| Registration Authority | Yamagata Prefecture |
| Registration Date | May 21, 1963 |
| Jihada (Metal pattern) | Koitame |
| Hamon (Temper line) | Gunome-choji midare and sugu-yakidashi |
| Bōshi (Point / Tip) | Sugu komaru turn |
| Nakago (Tang) | Ubu, sujikai with kesho file and kurijiri end |
| Mekugiana (Rivet holes) | 1 |
| Habaki | Copper base silver foil habaki |
| Mountings | Koshirae-tsuki |
| Koshirae | Uchigatana koshirae with a Aogai-mijin-nuri, crushed mother-of-pearl inlay saya |
| Koshirae Length |
100.5 cm 39.6 in |
| Tsuka Length |
23.0 cm 9.1 in |
| Tsuba | Paulownia in Bloom and Bellflower |
| Menuki | Dragon and Tiger |
| Fuchigashira | Waves |
| Other details | White ray skin wrapped dark brown silk Tsumami-maki style Tsuka |
Price |
1,500,000 JPY |
| Kato Tsunatoshi [加藤綱俊] (first-generation Chōunsai [長運斎]) was born in 1798 as the second son of Kato Kunihide [加藤国秀] of Yonezawa in Oshu, and the younger brother of Kato Tsunahide [加藤綱英]. He became a retainer swordsmith for the Uesugi clan, lords of the Yonezawa domain in Dewa province, alongside his elder brother. Around 1823, he moved to Edo and resided at the Uesugi family's secondary residence in Azabu, where he forged swords. He studied under Suishinshi Masahide [水心子正秀] and used the go-name Chōunsai. In 1854 (Ansei 1), he passed the name Chōunsai to his son Koretoshi [是俊] and changed his own name to Chōjūsai [長寿斎] in his later years. He established his own school and passed away in 1863 (Bunkyū 3) at the age of 66. He left behind fine works in the Bizen tradition featuring a chōji-style pattern, and was hailed as the foremost master of the Bizen tradition at the time. He further gained renown for his skill in reproducing Tsuda Sukehiro's tōran hamon. This katana was made in 1855 (Ansei 2), when Tsunatoshi was 57, it is a work from his mature period. It passed the Tokubetsu Hozon Token shinsa in June 2025 and this katana was featured in the October issue of Token Bijutsu by NBTHK. It comes with an Uchigatana koshirae with a Aogai-mijin-nuri, crushed mother-of-pearl inlay saya. |
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