This is a suriage, mumei katana attributed to Ishido Hata Morihisa. The blade features a tight itame hada with utsuri and a ko-choji gunome midare hamon with various activities. It comes with an NBTHK Hozon paper and is housed in a shirasaya.
NihontoWatchsuriage-mumei · Ishido · Keian (1648-1652) · nagasa 70cm · sori 1.5cm
Musashi · around 1648-1652
Fujishiro Jo saku · Tōken Taikan top 60%
The Edo period (1615 to 1868)
Under the Tokugawa peace the daishō became a regulated uniform, and demand gathered in the castle towns, above all Edo itself. The craft split two ways: brilliant display work for connoisseurs, and tested blades whose cutting results were sometimes inlaid in gold.
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.
