Edo was the sword’s age of connoisseurship: the Hon’ami appraisers, the shogunal register of famous blades of 1719, and a thriving literature turned the sword into an object of study even as it ceased to be drawn in war.
This katana is by Yokoyama Sukenaga, the second son of Sukehei, who claimed to be the 56th generation descendant of Tomonari. The blade features a tight ko-itame hada, with a hamon of tight nioiguchi ko-gunome and ko-choji with ashi. This particular work, made in 1838 when Sukenaga was 44, showcases his characteristic style. It comes with a carved koshirae featuring shakudo nanako fittings and a crane and turtle motif.
mei · Tenpo (1830-1844) · nagasa 69.7cm · sori 1.9cm





Bizen-den · Bizen · around 1830-1844
Fujishiro Jo saku · Tōken Taikan top 63%
14 pieces on the market now
Bizen-den · Bizen
45 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sukenobu祐信 | 1830-1844 | 0 |
| Suketaka祐高 | 1865-1868 | 0 |
| Sukeharu祐春 | 1864-1865 | 0 |
| Sukehiro祐廣 | 1854-1860 | 0 |
| Sukekane祐包 | 1868-1912 | 0 |
The Edo period (1615 to 1868)
Edo was the sword’s age of connoisseurship: the Hon’ami appraisers, the shogunal register of famous blades of 1719, and a thriving literature turned the sword into an object of study even as it ceased to be drawn in war.
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 sitePlease contact us by phone within 3 days of the item's arrival and ship it back the next day. The postage and security service fees are the customer's responsibility.


This katana is by Yokoyama Sukenaga, the second son of Sukehei, who claimed to be the 56th generation descendant of Tomonari. The blade features a tight ko-itame hada, with a hamon of tight nioiguchi ko-gunome and ko-choji with ashi. This particular work, made in 1838 when Sukenaga was 44, showcases his characteristic style. It comes with a carved koshirae featuring shakudo nanako fittings and a crane and turtle motif.
mei · Tenpo (1830-1844) · nagasa 69.7cm · sori 1.9cm





Bizen-den · Bizen · around 1830-1844
Fujishiro Jo saku · Tōken Taikan top 63%
14 pieces on the market now
Bizen-den · Bizen
45 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sukenobu祐信 | 1830-1844 | 0 |
| Suketaka祐高 | 1865-1868 | 0 |
| Sukeharu祐春 | 1864-1865 | 0 |
| Sukehiro祐廣 | 1854-1860 | 0 |
| Sukekane祐包 | 1868-1912 | 0 |
The Edo period (1615 to 1868)
Edo was the sword’s age of connoisseurship: the Hon’ami appraisers, the shogunal register of famous blades of 1719, and a thriving literature turned the sword into an object of study even as it ceased to be drawn in war.
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 sitePlease contact us by phone within 3 days of the item's arrival and ship it back the next day. The postage and security service fees are the customer's responsibility.

