This is a suriage mumei katana with a Hozon paper from the NBTHK attributing it to Ishido Hata Morihisa. Morihisa was a smith in the Edo Ishido School, known for their choji hamon and utsuri. The blade features a tight itame hada, ko-choji gunome midare hamon with sunagashi and kinsuji, and a sugu nijuba boshi.
suriage-mumei · Ishido · Keian (1648-1652) · nagasa 70cm · sori 1.5cm









Musashi · around 1648-1652
Fujishiro Jo saku · Tōken Taikan top 60%
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 site3-day return window from receipt.
This is a suriage mumei katana with a Hozon paper from the NBTHK attributing it to Ishido Hata Morihisa. Morihisa was a smith in the Edo Ishido School, known for their choji hamon and utsuri. The blade features a tight itame hada, ko-choji gunome midare hamon with sunagashi and kinsuji, and a sugu nijuba boshi.
suriage-mumei · Ishido · Keian (1648-1652) · nagasa 70cm · sori 1.5cm









Musashi · around 1648-1652
Fujishiro Jo saku · Tōken Taikan top 60%
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 site3-day return window from receipt.