The twentieth century nearly killed the craft twice: wartime distortion, then the occupation ban. The NBTHK’s founding in 1948 and licensed forging from 1953 rebuilt the sword as an art, crowned by Living National Treasures and the mukansa rank.
Oosumi Toshihira (Oosumi Toshihira, January 23, 1932 – October 4, 2009) was a tosho from Ota City, Gunma Prefecture. His real name was Oosumi Sadao (Sadao). In 1952, he became a disciple of the tosho Miyairi Akihira (Yukihira) of Sakaki Town, Nagano Prefecture, who later became a Ningen Kokuho. After becoming independent in 1960, in his very early period, there are works with midareba in the Bizen-den style; from around 1968, he strove to research works based on the suguha of Yamato-den, Yamashiro-den, and the Bitchu Aoe school, eventually coming to be praised in later years as "Oosumi of the Suguha." He had a history of numerous awards, including winning the Masamune-sho three times, and was designated a Gunma Prefecture-designated Mukei Bunkazai Hojisha in 1977, and a Juyo Mukei Bunkazai Hojisha (Ningen Kokuho) in 1997. In 1999, he received the Shiju Hosho. In 2001, he presented an omamori-katana to Toshi-no-miya Aiko Naishinno. In 2005, he also received the Kyokujitsu Chujusho. On October 4, 2009, he passed away at the age of 77 at his home in Ota City. This work is a rare katakiriha-zukuri tanto among his works. The jigane is ko-itame hada with abundant ji-nie, resulting in a refined and moist tanren. The yakiba is a suguha in nioi-deki, with scattered ko-ashi appearing within the ha, and the nioiguchi is slightly shimari-gokoro, bright and saeru. Despite the unusual tsukuri, the nioiguchi is tempered uniformly on both the omote and ura, showing his magnificent skill. The boshi continues straight and returns in ko-maru. This work is a katakiriha-zukuri tanto by the tosho Ningen Kokuho Oosumi Toshihira; both the ji and ha are forged without flaw, and it is a precious hitotsu by this smith where the moisture-rich jigane and the bright, saeru suguha are in perfect harmony. Shirasaya, kin-kise ichiju habaki, Hozon Token Kanteisho.
Offered by World Seiyudo
5 on the market










Machine translation from the shop's Japanese · may contain errors ·
Osumi · around 1926-1989
5 pieces on the market now
Shōwa to the present: destruction and revival
The twentieth century nearly killed the craft twice: wartime distortion, then the occupation ban. The NBTHK’s founding in 1948 and licensed forging from 1953 rebuilt the sword as an art, crowned by Living National Treasures and the mukansa rank.
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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).
¥1,200,000