{"id":31269,"date":"2026-04-29T11:42:40","date_gmt":"2026-04-29T02:42:40","guid":{"rendered":"https:\/\/sword-auction.com\/product\/31269\/as26103-%e7%9f%ad%e5%88%80%e7%9a%87%e5%a4%a7%e7%a5%9e%e5%ae%ae%e5%be%a1%e7%a5%9e%e5%ae%9d%e5%88%80%e4%bd%99%e9%89%84-%e6%9d%be%e5%b1%b1%e4%bd%8f%e9%be%8d%e6%b3%89%e5%85%a5%e9%81%93%e8%b2%9e\/"},"modified":"2026-04-29T11:46:53","modified_gmt":"2026-04-29T02:46:53","slug":"as26103-%e7%9f%ad%e5%88%80%e7%9a%87%e5%a4%a7%e7%a5%9e%e5%ae%ae%e5%be%a1%e7%a5%9e%e5%ae%9d%e5%88%80%e4%bd%99%e9%89%84-%e6%9d%be%e5%b1%b1%e4%bd%8f%e9%be%8d%e6%b3%89%e5%85%a5%e9%81%93%e8%b2%9e","status":"publish","type":"product","link":"https:\/\/sword-auction.com\/en\/product\/31269\/as26103-%e7%9f%ad%e5%88%80%e7%9a%87%e5%a4%a7%e7%a5%9e%e5%ae%ae%e5%be%a1%e7%a5%9e%e5%ae%9d%e5%88%80%e4%bd%99%e9%89%84-%e6%9d%be%e5%b1%b1%e4%bd%8f%e9%be%8d%e6%b3%89%e5%85%a5%e9%81%93%e8%b2%9e\/","title":{"rendered":"AS26103 Tanto: Remaining steel from the sacred treasure sword of the Imperial Grand Shrine Made by Matsuyama ju Ryusen Nyudo Sadatsugu (Living National Treasure) (NBTHK Tokubetsu Hozon Token)"},"content":{"rendered":"

Ordering Number: AS26103<\/p>\n

Tanto: Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token)<\/p>\n

Signature: Remaining steel from the sacred treasure sword of the Imperial Grand Shrine
\nMade by Matsuyama ju Ryusen Nyudo Sadatsugu (Living National Treasure)
\nFor his grandfather Miyamoto Masaikazu and heir Masanobu
\nA lucky day in February, 1952
\n\u7687\u5927\u795e\u5bae\u5fa1\u795e\u5b9d\u5200\u4f59\u9244
\n\u677e\u5c71\u4f4f\u9f8d\u6cc9\u5165\u9053\u8c9e\u6b21\u4f5c\u4e4b(\u91cd\u8981\u7121\u5f62\u6587\u5316\u8ca1\u4fdd\u6301\u8005(\u4eba\u9593\u56fd\u5b9d))
\n\u7956\u7236\u5bae\u672c\u653f\u4e00\u70ba\u5ae1\u5b6b\u653f\u5ba3
\n\u662d\u548c\u58ec\u8fb0\u4e8c\u6708\u5409\u65e5<\/p>\n

(We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku).
\nThis work is ranked as Saijyo Saku for Matsuyama ju Ryusen Nyudo Sadatsugu.
\nHabaki: Double-layer gold-plated.
\nBlade Length: 21.9 cm (8.62 in).
\nCurvature: 0.0 cm (0.00 in).
\nMekugi Hole: 1.
\nWidth at Base (Motohaba): 2.35 cm (0.93 in).
\nThickness of rim (Kasane): 0.52 cm (0.20 in).
\nSword Weight: 135 g.
\nEra: A lucky day in February, 1952.
\nShape: A suken (straight sword engraving) is carved on the front, and double grooves (futatsuji-hi) are carved on the reverse.
\nJigane: Ko-itame hada. It forms an exceptionally beautiful steel surface.
\nHamon: Nie-deki, gunome-midare, with gunome activity within the hamon, and the boshi turns back in a rounded form.<\/p>\n

Features: Matsuyama ju Ryusen Nyudo Sadatsugu was the first swordsmith from Ehime Prefecture to be designated as an Important Intangible Cultural Property of Japan (Living National Treasure).
\nHis production volume is small, and he made swords for shrines, votive offerings, and protective daggers for the Imperial family.
\nIn 1938, he received the Prime Minister\u2019s Award at the 1st Sword Exhibition.
\nAfter that, he continued forging many works as protective daggers, including one for Crown Princess Michiko on the occasion of her marriage to Crown Prince Akihito.
\nHis polishing also produces works of remarkable strength and presence.<\/p>\n

Koshirae: Aikuchi style mounting.
\nSaya (Scabbard): Paulownia crest in gold maki-e.
\nMekugi: Plant motif design.<\/p>\n

Aoi Art\u2019s Comment: I once owned a tanto by Ryusen Nyudo Sadatsugu.
\nIt was a work with a floral motif, delivered from Japan to Lieutenant General Uokawa in North Korea via South Korea.
\nThe name of Lieutenant General Uokawa was inscribed in English, and it was a work from around 1949.
\nAt that time, sword production was not permitted, so I believe it was made under special authorization.
\nLater, after Lieutenant General Uokawa passed away, I acquired the sword in the United States as part of my collection.
\nAs time has passed, I have now obtained this work as well.<\/p>\n

NBTHK Tokubetsu Hozon Token.
\nAoiArt estimation paper: Whole Oshigata.<\/p>\n

Please note: the price does not include the shipping fees.<\/p>\n

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Ordering Number: AS26103 Tanto: Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token) Signature: Remaining steel from the sacred treasure sword of the Imperial Grand Shrine Made by Matsuyama ju Ryusen Nyudo Sadatsugu (Living National Treasure) For his grandfather Miyamoto Masaikazu and heir Masanobu A lucky day in February, 1952 \u7687\u5927\u795e\u5bae\u5fa1\u795e\u5b9d\u5200\u4f59\u9244 \u677e\u5c71\u4f4f\u9f8d\u6cc9\u5165\u9053\u8c9e\u6b21\u4f5c\u4e4b(\u91cd\u8981\u7121\u5f62\u6587\u5316\u8ca1\u4fdd\u6301\u8005(\u4eba\u9593\u56fd\u5b9d)) \u7956\u7236\u5bae\u672c\u653f\u4e00\u70ba\u5ae1\u5b6b\u653f\u5ba3 \u662d\u548c\u58ec\u8fb0\u4e8c\u6708\u5409\u65e5 (We divide 4 […]\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-31269","product","type-product","status-publish","hentry","product_cat-sword-en","product_cat-tanto-en"],"_links":{"self":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product\/31269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/media?parent=31269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}