NihontoWatchOrdering number:25530Katana in Shirasaya (NBTHK Hozon Token)Signature: Heianjo Horii Unsai Minamoto Sadamitsu Saku平安城堀井雲斎源貞光作We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.This sword is ranked as Jyo Saku for works by Heianjo Horii Unsai Minamoto Sadamitsu.Habaki: Single-layered copperBlade Length: 78.2 cm (30.79 in)Curvature: 1.4 cm (0.55 in)Mekugi Hole: 1Width at Base (Motohaba): 3.40 cm (1.34 in)Width at Tip (Sakihaba): 2.76 cm (1.09 in)Thickness of rim (Kasane): 0.9 cm (0.35 in)Sword Weight: 1210 gramsEra: Edo period, around the Keiō era (1865–1868)Shape: A long katana with wide blade width, thick kasane, and strong curvature.The kissaki is extended, giving the sword a robust and powerful appearance.Jigane: Ko-itame hada, well-forged and of high quality.Hamon: Nie-based suguha with active ko-ashi.The boshi is large, stretches out, and returns roundly.Features: Sadamitsu was a disciple of Gassan Sadakazu and referred to himself as Ryūunsai of Heianjo in Yamashiro province.This work measures 78.2 cm in blade length, has wide mihaba, and is a solid and robust piece.Being a student of Gassan Sadakazu, his craftsmanship is of high quality.It was made around the Keiō era in the late Edo period.There are works very similar to those of Gassan Sadakazu, suggesting that he may have also produced swords on his behalf.The sword features a dignified and impressive ō-kissaki, making it a remarkable and attractive piece.NBTHK Hozon TokenAoi Art estimation paper: Whole OshigataPrice:650,000JPY商談中 HOLDRelated Items:Katana:Gassan Unryushi Minamoto Sadakazu(NBTHK Hozon Token)Katana: Naniwa ju Gassan Unryushi Sadakazu Kitae (Kokuin) (NBTHK Tokubetsu Hozon Token) (NBTHK Tokubetsu Kicho Token)Katana:Osaka Ju Gassan Sadakatsu (Kao) (NBTHK Tokubetsu Hozon Token)Katana: Osaka Ju Gassan Sadakatsu Kinsaku (Kao)(NBTHK Tokubetsu Hozon Token)Katana:Naniwa Ju Gassan Sadakatsu Kinsaku (written seal mark) (NBTHK Hoozn Token)Katana : Kun Yonto Kurihara
NihontoWatchOffered by Aoi Art
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27 on the market
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Shinshinto · Yamashiro · around 1868-1912
Tōken Taikan top 95%
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 |
Meiji: survival after the edict
The Haitōrei edict of 1876 ended sword wearing and nearly ended the craft itself. Military demand and imperial patronage kept a remnant alive, and in 1906 Gassan Sadakazu and Miyamoto Kanenori were named Artists to the Imperial Household.
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.
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