Real name: Sumitani Yoichiro, born on January 24, Taisho 10 (1921) in Matto City, Ishikawa Prefecture. Died on December 12, Heisei 10 (1998). While enrolled in the Faculty of Science and Engineering at Ritsumeikan University, he entered the Ritsumeikan Nihonto Tanren Kenkyujo and studied under the director and tosho, Sakurai Masayuki. In Showa 17, he worked diligently on sword production at the Kokoku Nihonto Tanrenjo in Onomichi City, Hiroshima Prefecture, and through self-study using old celebrated swords as models, he mastered the traditional sakutou methods of the Gokaden: Mino, Yamato, Yamashiro, Bizen, and Soshu. He devoted himself to the study of the Bizen-den, such as the Ichimonji lineage of the mid-Kamakura period, producing magnificent o-choji midare and juka-choji midare hamon with deep nioi, as well as the unique utsuri appearing in the ji, and created a brilliant choji hamon known as "Sumitani Choji." Showa 42 (1967): Designated as Mukansa. Showa 48 (1973): Forged the tachi mi for the Goshinpou of the 60th Jingu Shikinen Sengu. Showa 56 (1981): Designated as a holder of Juyo Mukei Bunkazai (Ningen Kokuho) "Nihonto." *What is a Ningen Kokuho? The formal name is "Juyo Mukei Bunkazai Hojisha." Established under the Law for the Protection of Cultural Properties, among intangible cultural properties of high historical and artistic value, particularly important skills are designated as "Juyo Mukei Bunkazai," and individuals who have mastered and embody them are recognized as "Juyo Mukei Bunkazai Hojisha." They are commonly referred to as Ningen Kokuho.
Offered by E-sword
We couldn’t find current papers for this piece. Ask the dealer whether it has been, or can be, submitted to shinsa. — Hoshi



Masamine
Shōwa
Ishikawa
Signed
As written by the shop
Machine translation from the shop's Japanese · may contain errors ·
We could not find an authenticity certificate on the seller’s listing. Japanese swords and fittings are normally papered by the NBTHK (or the NTHK). Without one, the attribution is the seller’s own assessment and has not been independently verified — treat it with caution and ask the dealer about certification before buying.
Cooling-off (returns or exchanges) is accepted within 3 days of the item's arrival. Return shipping and refund transfer fees are the customer's responsibility. Fees other than the item price (transfer fees, credit card fees, etc.) cannot be refunded. Returns and refunds are not available for overseas destinations.
¥280,000