This is a magnificent katana by Kenryushi Sadaharu, a swordsmith from Osaka during the late Edo period and a student of Gassan Sadakatsu. The blade exhibits a shallow sori, wide mihaba, and extended kissaki, characteristic of the powerful style favored by samurai of the Bakumatsu era. It features a tightly forged ko-itame hada with ji-kei, and a sugu-cho hamon with ko-gunome and ko-ashi, accented by kinsuji along the ha-buchi. The nakago is meticulously finished with a large suji-kai yasurime and a kurijiri, bearing a precise long mei and an engraved seal, with the date Keio Gannen (1865) inscribed in elegant grass script on the ura.
Certificate reading — 銘 於浪花永口剣龍子藤原貞晴鍛之(刻印) 慶応元乙丑歳十二月吉日
NihontoWatchBETAmei · Keio (1865-1868) · nagasa 74.5cm · sori 1.3cm
Shinshinto · Settsu · around 1865-1868
Tōken Taikan top 95%
5 pieces on the market now
Shinshinto · Settsu
40 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sadaharu貞晴 | 1865-1868 | 0 |
| Sadayoshi貞吉 | 1926-1989 | 0 |
| Yoshiaki吉明 | 1844-1848 | 0 |
| Naonobu直信 | 1854-1860 | 0 |
| Sadayoshi貞吉 | 1830-1863 | 0 |
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteDomestic: items may be returned within 7 days in original condition for a full refund (buyer covers transport). Overseas orders: no-refunds, no-returns.
This is a magnificent katana by Kenryushi Sadaharu, a swordsmith from Osaka during the late Edo period and a student of Gassan Sadakatsu. The blade exhibits a shallow sori, wide mihaba, and extended kissaki, characteristic of the powerful style favored by samurai of the Bakumatsu era. It features a tightly forged ko-itame hada with ji-kei, and a sugu-cho hamon with ko-gunome and ko-ashi, accented by kinsuji along the ha-buchi. The nakago is meticulously finished with a large suji-kai yasurime and a kurijiri, bearing a precise long mei and an engraved seal, with the date Keio Gannen (1865) inscribed in elegant grass script on the ura.
Certificate reading — 銘 於浪花永口剣龍子藤原貞晴鍛之(刻印) 慶応元乙丑歳十二月吉日
NihontoWatchBETAmei · Keio (1865-1868) · nagasa 74.5cm · sori 1.3cm
Shinshinto · Settsu · around 1865-1868
Tōken Taikan top 95%
5 pieces on the market now
Shinshinto · Settsu
40 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sadaharu貞晴 | 1865-1868 | 0 |
| Sadayoshi貞吉 | 1926-1989 | 0 |
| Yoshiaki吉明 | 1844-1848 | 0 |
| Naonobu直信 | 1854-1860 | 0 |
| Sadayoshi貞吉 | 1830-1863 | 0 |
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteDomestic: items may be returned within 7 days in original condition for a full refund (buyer covers transport). Overseas orders: no-refunds, no-returns.
![Tanto - Hozon - by Gassan Sadayoshi - Fuyou Asahi, Ansei Hebidoshi 8gatsuhi (Attributed to Gassan Sadayoshi) [NBTHK Hozon]](/_next/image?url=https%3A%2F%2Fitbhfhyptogxcjbjfzwx.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Flisting-images%2Ftoyuukai%2FL519985%2F02.jpg&w=2560&q=90)
