Authentic Nihonto Katana Signed by Naokiyo NBTHK TOKUBETSU HOZON TOKEN Certificate
Authentic Nihontō Japanese Sword Katana Signed by Choshu ju Nio Naokiyo 長州住二王直清 NBTHK TOKUBETSU HOZON TŌKEN Certificate
This is a signed and dated work by 清重 (Kiyoshige), an official swordsmith of the Choshu domain who was active in the 長門国 (Nagato Province, present-day Yamaguchi Prefecture) during the late Edo period. 直清 (Naokiyo), whose common name was 玉井長蔵 (Tamai Chozō), was a late member of the Nio school and studied under 大慶直胤 (Taikei Naotane).
This sword has a shallow curvature with a well-balanced difference between the base and tip. The extended, powerful boshi (帽子) complements the overall form. The steel has a densely forged 小板目肌 (ko-itame hada) with fine chikei and thick ji-nie, reminiscent of the small grain texture of Hizen swords. The hamon (刃文) is a bright, clear juzu-ba style gunome-midare with occasional tall gunome, featuring frequent ashi and fine sunagashi in the blade. The jihada shows tobiyaki, and the boshi is straight with a rounded return on both sides. It is a masterpiece that demonstrates Naokiyo's high level of skill without any notable flaws or defects.
Bare weight: 1,008 grams.
Nihontō Information
| Name 名称 | 長州住二王直清作 元治二年二月日（二代） - Choshu ju Nio Naokiyo (2nd Gen) |
| Blade Length 刀長 | 二尺三寸九分七厘強 / 72.66 cm |
| Sori 反り | 三分八厘強 / 1.17 cm |
| Blade Width 元幅 | 34.9 mm |
| Blade Thickness 元重 | 8.4 mm |
| Tip Width 先幅 | 物打25.6 mm 横手位置23.8 mm |
| Tip Thickness 先重 | 物打6.8 mm 松葉位置6.2 mm |
| Mekugi-ana 目釘穴 | 1個 |
| Age 時代 | 元治2年（1865） - The latter period of Edo era - 19th century |
| Certificate 鑑定書 | 特別保存刀剣鑑定書(NBTHK TOKUBETSU HOZON TŌKEN Certificate ) |
| Registration 登録 | 昭和41年7月14日 (July 14, 1966) 広島県登録 (Hiroshima Prefecture Registration) |
| Included 附属 | 素銅地金着はばき (Copper habaki with gold plating) |
| 白鞘 (Shirasaya Case) | |
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Description
Authentic Nihontō Japanese Sword Katana Signed by Choshu ju Nio Naokiyo 長州住二王直清 NBTHK TOKUBETSU HOZON TŌKEN Certificate
This is a signed and dated work by 清重 (Kiyoshige), an official swordsmith of the Choshu domain who was active in the 長門国 (Nagato Province, present-day Yamaguchi Prefecture) during the late Edo period. 直清 (Naokiyo), whose common name was 玉井長蔵 (Tamai Chozō), was a late member of the Nio school and studied under 大慶直胤 (Taikei Naotane).
This sword has a shallow curvature with a well-balanced difference between the base and tip. The extended, powerful boshi (帽子) complements the overall form. The steel has a densely forged 小板目肌 (ko-itame hada) with fine chikei and thick ji-nie, reminiscent of the small grain texture of Hizen swords. The hamon (刃文) is a bright, clear juzu-ba style gunome-midare with occasional tall gunome, featuring frequent ashi and fine sunagashi in the blade. The jihada shows tobiyaki, and the boshi is straight with a rounded return on both sides. It is a masterpiece that demonstrates Naokiyo's high level of skill without any notable flaws or defects.
Bare weight: 1,008 grams.
Nihontō Information
| Name 名称 | 長州住二王直清作 元治二年二月日（二代） - Choshu ju Nio Naokiyo (2nd Gen) |
| Blade Length 刀長 | 二尺三寸九分七厘強 / 72.66 cm |
| Sori 反り | 三分八厘強 / 1.17 cm |
| Blade Width 元幅 | 34.9 mm |
| Blade Thickness 元重 | 8.4 mm |
| Tip Width 先幅 | 物打25.6 mm 横手位置23.8 mm |
| Tip Thickness 先重 | 物打6.8 mm 松葉位置6.2 mm |
| Mekugi-ana 目釘穴 | 1個 |
| Age 時代 | 元治2年（1865） - The latter period of Edo era - 19th century |
| Certificate 鑑定書 | 特別保存刀剣鑑定書(NBTHK TOKUBETSU HOZON TŌKEN Certificate ) |
| Registration 登録 | 昭和41年7月14日 (July 14, 1966) 広島県登録 (Hiroshima Prefecture Registration) |
| Included 附属 | 素銅地金着はばき (Copper habaki with gold plating) |
| 白鞘 (Shirasaya Case) | |