{"id":30028,"date":"2026-01-28T11:18:37","date_gmt":"2026-01-28T02:18:37","guid":{"rendered":"https:\/\/sword-auction.com\/product\/30028\/as25724-%e5%88%80%ef%bc%9a%e5%82%99%e5%89%8d%e5%9b%bd%e4%bd%8f%e9%95%b7%e8%88%b9%e6%b8%85%e5%85%89%e4%bd%9c%e4%b9%8b-%e6%b0%b8%e7%a6%84%e4%ba%94%e5%b9%b4%e5%85%ab%e6%9c%88%e5%90%89%e6%97%a5%e7%89%b9\/"},"modified":"2026-01-28T11:19:11","modified_gmt":"2026-01-28T02:19:11","slug":"as25724-%e5%88%80%ef%bc%9a%e5%82%99%e5%89%8d%e5%9b%bd%e4%bd%8f%e9%95%b7%e8%88%b9%e6%b8%85%e5%85%89%e4%bd%9c%e4%b9%8b-%e6%b0%b8%e7%a6%84%e4%ba%94%e5%b9%b4%e5%85%ab%e6%9c%88%e5%90%89%e6%97%a5%e7%89%b9","status":"publish","type":"product","link":"https:\/\/sword-auction.com\/en\/product\/30028\/as25724-%e5%88%80%ef%bc%9a%e5%82%99%e5%89%8d%e5%9b%bd%e4%bd%8f%e9%95%b7%e8%88%b9%e6%b8%85%e5%85%89%e4%bd%9c%e4%b9%8b-%e6%b0%b8%e7%a6%84%e4%ba%94%e5%b9%b4%e5%85%ab%e6%9c%88%e5%90%89%e6%97%a5%e7%89%b9\/","title":{"rendered":"AS25724 Katana:Bizen Kuni Ju Osafune Kiyomitsu Saku Kore Dated: August, 1562 (Eiroku 5) (NBTHK Tokubetsu Hozon Token)"},"content":{"rendered":"

Ordering Number: AS25724<\/p>\n

Katana in Shirasaya (NBTHK Tokubetsu Hozon Token)
\nSignature: Bizen Kuni Ju Osafune Kiyomitsu Saku Kore
\nDated: August, 1562 (Eiroku 5)<\/p>\n

Oshigata:
\nBizen Kuni Ju Osafune Gorosaemon no Jo Kiyomitsu.
\nDated inscription on the tang: Eiroku 5 (1562).
\nBlade length noted as 2 shaku 2 sun 8 bu han (approx. 69.2 cm).
\nWritten by Hon\u2019ami Nisshu on a lucky day in February, 1991 (Heisei 3).<\/p>\n

We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
\nThis piece is ranked as Jyo Saku (Above Average Work).<\/p>\n

Habaki: Gold-plated single Habaki.
\nBlade Length: 69.2 cm (27.24 in)
\nCurvature: 1.7 cm (0.67 in)
\nMekugi Hole: 1
\nWidth at Base (Motohaba): 3.14 cm (1.24 in)
\nWidth at Tip (Sakihaba): 2.00 cm (0.79 in)
\nThickness of Rim (Kasane): 0.74 cm (0.29 in)
\nSword Weight: 780 g<\/p>\n

Shape:This sword has a robust width, with a bo-hi (groove) carved on both sides.The kissaki (tip) is slightly extended, presenting a solid and well-balanced appearance.<\/p>\n

Jigane (Steel Surface):Well-forged ko-itame hada, showing a faint utsuri (shadow-like pattern).The signature resembles that of Gorosaemon no Jo Kiyomitsu.<\/p>\n

Hamon (Temper Pattern):Confirmed by Hon\u2019ami Nisshu.
\nThe jigane is beautiful, and the hamon complements it elegantly.
\nIt begins with a straight temper line (suguha) transitioning into a mild notare, then a gentle gunome-midare with small ashi included\u2014rich in variety.<\/p>\n

Aoi Art\u2019s Comment:
\nIn the late Muromachi period, high-quality swords were rare.
\nHowever, some daimyos and warriors commissioned superior works.
\nThis piece by Bizen Kuni Ju Osafune Gorosaemon no Jo Kiyomitsu is one such fine example.<\/p>\n

Era: Muromachi Period
\nHistorical Background:
\nThe Muromachi period was an era of warfare.
\nThe Eiroku era (1558\u20131570) included key events such as the Battle of Okehazama (where Nobunaga defeated Imagawa Yoshimoto), and the “Eiroku Incident” in 1565, when the 13th shogun Ashikaga Yoshiteru was assassinated.
\nThese events marked a turning point in weakening the Muromachi shogunate and intensifying the Sengoku period’s power struggles.<\/p>\n

In 1565 (Eiroku 8):
\nThe Eiroku Incident occurred\u2014Miyoshi Nagayasu, Miyoshi Soun, Ise Sadanari (Miyoshi Sanninshu) and Matsunaga Hisahide attacked and killed Shogun Ashikaga Yoshiteru at Nijo Palace in Kyoto.
\nThis unprecedented event\u2014where a shogun was assassinated by his own retainers\u2014led to the collapse of the shogunate\u2019s authority.
\nFollowing the assassination, Yoshiteru’s younger brother, Ashikaga Yoshiaki, was captured by Matsunaga Hisahide and placed under house arrest.<\/p>\n

NBTHK Tokubetsu Hozon Token
\nAoi Art Estimation Paper
\nWhole Oshigata<\/p>\n

Shipping fee not included.<\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Ordering Number: AS25724 Katana in Shirasaya (NBTHK Tokubetsu Hozon Token) Signature: Bizen Kuni Ju Osafune Kiyomitsu Saku Kore Dated: August, 1562 (Eiroku 5) Oshigata: Bizen Kuni Ju Osafune Gorosaemon no Jo Kiyomitsu. Dated inscription on the tang: Eiroku 5 (1562). Blade length noted as 2 shaku 2 sun 8 bu han (approx. 69.2 cm). Written […]\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-30028","product","type-product","status-publish","hentry","product_cat-katana-en","product_cat-sword-en"],"_links":{"self":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product\/30028","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=30028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}