NihontoWatchOrdering number:AS24133Katana in Shirasaya, with Army Gunto Koshirae, in Kiri Box (NBTHK Tokubetsu Hozon Token)Signature: Osaka ju Gassan Sadakatsu kin sakuImperial Year 2600 (1940)大阪住月山貞勝僅作皇紀二千六百年We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.This work is ranked as Jyojyo Saku among the works of Gassan Sadakatsu.Habaki: Double-layered plain copper、Silver Gassan-style HabakiBlade Length: 66.7 cm (26.26 in)Curvature: 1.7 cm (0.67 in)Mekugi Hole: 1Width at Base (Motohaba): 2.96 cm (1.17 in)Width at Tip (Sakihaba): 1.97 cm (0.78 in)Thickness of rim (Kasane): 0.675 cm (0.27 in)Sword Weight: 655 gramsEra: 1940 (Showa 15)Shape: The blade has a solid width and thickness, with a long portion of the original blade remaining intact.It features a bohi (groove) with soehi (secondary groove) carved into it.Jigane: Displays the distinctive Ayasugi-hada, also known as Gassan-hada, visible across the entire surface.Hamon: The Ayasugi pattern appears prominently, and the polish follows the pattern of the hamon.The boshi is irregular.Features: The year 2600 in the Imperial calendar corresponds to 1940 (Showa 15), the year before the Pacific War began in 1941 (Showa 16).Gassan Sadakatsu was the son of Gassan Sadakazu and initially produced works on his father's behalf.After his father’s passing, he began making many swords for military personnel.He was also skilled in carving horimono (blade engravings) and left behind many excellent works.In 1916 (Taisho 5), Sadakatsu was already acting as a substitute maker and doing blade carvings.He established a forge in Yoshino, Nara Prefecture, where he and his apprentices produced many swords for soldiers heading to the battlefield.Koshirae: Army Gunto KoshiraeBox dimensions:Length: 103 cmWidth: 11 cmHeight: 12 cmNBTHK Tokubetsu Hozon Token Certificate (to be issued soon)Aoi Art Estimation Paper: Whole Oshigata includedIn Kiri boxPlease note: the price does not include the shipping fees.Auction Start
NihontoWatchOffered by Aoi Art
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Shinshinto · Osaka · around 1926-1989
Fujishiro Jo saku · Tōken Taikan top 60%
6 pieces on the market now
Where Sadakatsu stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
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Shinshinto · Settsu
27 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sadaharu貞晴 | 1865-1868 | 0 |
| Sadayoshi貞吉 | 1926-1989 | 0 |
| Yoshiaki吉明 | 1844-1848 | 0 |
| Naonobu直信 | 1854-1860 | 0 |
| Sadayoshi貞吉 | 1830-1863 | 0 |
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.
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 siteIf you wish to return an item, please notify us within 3 days of receipt. After this period we cannot accept cancellations. Please ship the return to us within 5 business days. Cancellation is conditional on the item being kept in the same condition as at the time of sale, so please handle it with care.