{"id":26439,"date":"2025-04-19T10:21:56","date_gmt":"2025-04-19T01:21:56","guid":{"rendered":"https:\/\/sword-auction.com\/?post_type=product&p=26439"},"modified":"2025-04-19T10:25:05","modified_gmt":"2025-04-19T01:25:05","slug":"as25067-katana-nagasone-okisato-nyudo-kotetsu-with-saidan-mei45th-nbthk-juyo-token","status":"publish","type":"product","link":"https:\/\/sword-auction.com\/en\/product\/26439\/as25067-katana-nagasone-okisato-nyudo-kotetsu-with-saidan-mei45th-nbthk-juyo-token\/","title":{"rendered":"AS25067 Katana: Nagasone Okisato Nyudo Kotetsu with Saidan-mei(45th NBTHK Juyo Token)"},"content":{"rendered":"

Katana: in Shirasaya (45th NBTHK Juyo Token)<\/p>\n

Signature: Nagasone Okisato Nyudo Kotetsu \u9577\u66fd\u7962\u8208\u91cc\u5165\u9053\u864e\u5fb9<\/p>\n

Golden-inscription[Saidan-mei,\u88c1\u65ad\u9298]:
\nKanbun 5, Gokugetsu 10 nichi (December 10,1665) \u5bec\u6587\u4e94\u5e74\u6975\u6708\u5341\u65e5
\ncut off Ryoguruma and Karigane twice \u4e21\u8eca\u96c1\u4e21\u5ea6\u5207\u843d\u3000\u3000
\nTest cut by Yamano Kanjur\u014d Hisahide (written seal mark) \u5c71\u91ce\u52d8\u5341\u90ce\u4e45\u82f1<\/p>\n

We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
\nThis piece is ranked as Saijyo Saku among works by Kotetsu.<\/p>\n

Habaki: Double layered golden habaki (possibly solid gold)
\nBlade Length: 74.9 cm (29.49 in)
\nCurvature: 1.1 cm (0.43 in)
\nMekugi Hole: 3.19
\nWidth at Base (Motohaba): 2.14 cm (0.84 in)
\nWidth at Tip: 0.54 cm (0.21 in)
\nThickness of rim (Kasane): 0.64 cm (0.25 in)
\nSword Weight: 790 g
\nEra: The early Edo period, around 1665
\nShape: A long katana with standard blade width, shallow curvature, tapering toward the tip, and a small kissaki. This is typical shape from the Kanbun era.
\nJigane: fine Ko-itame hada with Jinie and faint Chikei.
\nHamon: Konie-base, clear and bright suguha mixed with Ko-gunome with Ko-Ashi. <\/p>\n

Features: Nagasone Kotetsu Okisato was originally active as an armor maker in Omi or Echizen, but it is said that around 1656 (Meireki 2), when he was about 50 years old, he moved to Edo and became a swordsmith.
\nHe was renowned for the sharpness of his blades, and in the Kaiho Kenjaku, a book published in 1797 that recorded the results of test cuttings, he was ranked as a Saijo O Wazamono (top rank for cutting ability).
\nHis swords were highly popular even at the time, and his swords were favored by high-ranking officials of the Shogunate, resulting in many counterfeits being made.
\nOriginally signed with the kanji \u201c\u864e\u5fb9\u201d (Kotetsu), he began using the character \u201c\u4e55\u201d around Kanbun 4 (1664).
\nThe cutting test inscription on this sword dates to Kanbun 5 (1665), suggesting that the sword was likely produced around the same time. <\/p>\n

Aoi Art\u2019s Comment: The term \u201cRyoguruma or Moroguruma\u201d (\u4e21\u8eca) in the cutting test refers to the hip area, which is said to be difficult to cut due to the pelvic bone.
\n\u201cKarigane\u201d (\u96c1\u91d1) refers to the armpit area, which is also considered hard to cut.\u3000This cutting test inscription vividly demonstrates the sharpness of this blade.
\nBoth the jigane and hamon are simple yet clear and vivid, giving a sharp impression as iall excess has been eliminated in pursuit of cutting performance. It is as if we get a glimpse of his aesthetic philosophy. <\/p>\n

the 45th NBTHK Juyo Certificate
\nAoi Art Estimation Paper: Whole Oshigata
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\n\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Katana: in Shirasaya (45th NBTHK Juyo Token) Signature: Nagasone Okisato Nyudo Kotetsu \u9577\u66fd\u7962\u8208\u91cc\u5165\u9053\u864e\u5fb9 Golden-inscription[Saidan-mei,\u88c1\u65ad\u9298]: Kanbun 5, Gokugetsu 10 nichi (December 10,1665) \u5bec\u6587\u4e94\u5e74\u6975\u6708\u5341\u65e5 cut off Ryoguruma and Karigane twice \u4e21\u8eca\u96c1\u4e21\u5ea6\u5207\u843d\u3000\u3000 Test cut by Yamano Kanjur\u014d Hisahide (written seal mark) \u5c71\u91ce\u52d8\u5341\u90ce\u4e45\u82f1 We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular […]\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-26439","product","type-product","status-publish","hentry","product_cat-katana-en","product_cat-masterpiece","product_cat-sword-en"],"_links":{"self":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product\/26439","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=26439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}