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 is a katana by Tosa no Kami Fujiwara Masanobu from the middle Edo period (Genroku era). The blade has a well-forged ko-itame hada and a bright hamon with soft nioiguchi. It comes with a Tokubetsu Hozon certificate, a copper habaki, and a shirasaya.
Certificate reading — 銘 土佐守藤原正信
mei · Tenpo (1830-1844) · nagasa 68.73cm · sori 2.04cm









Yamato · around 1681-1736
2 pieces on the market now
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 siteReturns accepted within 3 days of delivery for defective items or significant discrepancies; customer bears return shipping and bank fees.
¥550,000
This is a katana by Tosa no Kami Fujiwara Masanobu from the middle Edo period (Genroku era). The blade has a well-forged ko-itame hada and a bright hamon with soft nioiguchi. It comes with a Tokubetsu Hozon certificate, a copper habaki, and a shirasaya.
Certificate reading — 銘 土佐守藤原正信
mei · Tenpo (1830-1844) · nagasa 68.73cm · sori 2.04cm









Yamato · around 1681-1736
2 pieces on the market now
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 siteReturns accepted within 3 days of delivery for defective items or significant discrepancies; customer bears return shipping and bank fees.
¥550,000