Description
Authentic Nihontō Japanese Sword Katana Signed by Miyoshi Izu no kami Minamoto Naokuni 三好伊豆守源直國 NBTHK TOKUBETSU HOZON TŌKEN Certificate
直國 (Naokuni) was a swordsmith who studied under 助直 (Sukenao) and was a grand-disciple of the famous craftsman 助廣 (Sukehira). According to sword records, he seems to have been active around the 享保 (Kyōhō) period, and judging by the date on this piece, he appears to have lived a very long life.
This sword features a shinogi-zukuri shape with an iori-mune, and the difference between the base and tip is not noticeable. It has a powerful extended chu-kissaki, with a narrow shinogi-width, indicating ease of extraction during cutting. The steel shows a mix of small itame and mokume with some masame flowing in places, revealing large grain spots in certain areas. The hamon is a gentle undulating pattern with small nie as the base, interspersed with ashi, kinsugi, and sunagashi. As it progresses towards the tip, the nioiguchi tightens, featuring pointed gunome, and the boshi is straight with a round end on the omote and an o-maru on the ura, giving a yakitsume appearance. The tang's finish and signature style are reminiscent of his grandmaster 助廣 (Sukehira) and master 助直 (Sukenao).
The accompanying koshirae features shakudo fittings for the koiguchi, kurigata, and kojiri, and the tsuka has a robust square-shaped onigawara pattern. The iron plate tsuba is engraved with a statue of Nio, reflecting the ownership by a warrior of rugged disposition.
Bare weight: 709 grams.
Weight with koshirae and without scabbard: 1,074 grams.
※There is a small nick on the fukura of the kissaki. If you are interested, you can choose a partial polishing, but this part of the service will be charged extra.
Nihontō Information
| Name 名称 |
三好伊豆守源直國 寛政十年八月日 Miyoshi Izu no kami Minamoto Naokuni |
| Blade Length 刀長 | 二尺二寸三分七厘弱 / 67.8 cm |
| Sori 反り | 五分八厘弱 / 1.78 cm |
| Blade Width 元幅 | 33.0 mm |
| Blade Thickness 元重 | 6.8 mm |
| Tip Width 先幅 | 物打27.3 mm 横手位置24.6 mm |
| Tip Thickness 先重 | 物打5.6 mm 松葉先5.3 mm |
| Mekugi-ana 目釘穴 | 1個 |
| Age 時代 | 江戸後期 寛政10年 (1798) - The latter period of Edo era - 18th century |
| Certificate 鑑定書 | 特別保存刀剣鑑定書(NBTHK TOKUBETSU HOZON TŌKEN) |
| Registration 登録 | 昭和42年6月6日 (June 6, 1967) 高知県登録 (Kochi Prefecture Registration) |
| Included 附属 | 表銅地金鍍金二重はばき / 古素剣はばき (Copper-based double habaki with gold plating / Old-style habaki) |
| 白鞘 / 継木 (Shirasaya Case / Tsugiki) | |
| 黒蝋塗鞘打刀拵 (Black lacquered saya uchigatana koshirae) |
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