{"id":34052,"date":"2026-11-12T15:23:06","date_gmt":"2026-11-12T06:23:06","guid":{"rendered":"https:\/\/sword-auction.com\/product\/34052\/as25001-katana-mumeiunsignedkobzennbthk-tokubetsu-hozon-token\/"},"modified":"2026-11-12T16:24:30","modified_gmt":"2026-11-12T07:24:30","slug":"as25001-katana-mumeiunsignedkobzennbthk-tokubetsu-hozon-token","status":"publish","type":"product","link":"https:\/\/sword-auction.com\/en\/product\/34052\/as25001-katana-mumeiunsignedkobzennbthk-tokubetsu-hozon-token\/","title":{"rendered":"AS25001 Katana: Mumei(Unsigned)(Kobizen)(NBTHK Tokubetsu Hozon Token)"},"content":{"rendered":"

Katana in Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token)<\/p>\n

Inscription: Mumei(Unsigned)(Kobizen \u53e4\u5099\u524d)<\/p>\n

We divide works in to Saijo Saku, Jyojyo Saku, Jyo Saku,and Regular Saku.
\nThis piece is ranked as Jyojyo Saku for Mumei(Kobizen). <\/p>\n

Habaki: gold-plated single habaki
\nBlade Length: 61.3cm (24.13in)
\nCurvature: 1.5cm (0.59in)
\nMekugi-ana: 2
\nMotohaba: 2.45cm (0.96in)
\nSakihaba: 3.31cm (1.30in)
\nKasane: 0.34cm (0.13in)
\nWeight: 450g<\/p>\n

Era: early Kamakura period, circa 1200.
\nShape: a slende, slightly thin Osuriage mumei blade with Koshizori.
\nJigane: fine Koitame and mokume. Midare usuri apperars.
\nHamon: ko gunome and kochoji with softly blurred Nioikuchi, koashi and sunagashi. <\/p>\n

Features:
\nKobizen(old bizen) is a school of Bizen swordsmiths that originated in the mid-Heian period, with Tomonari regarded as its founder. Today, works dating mainly from the late Heian to the early Kamakura period are attributed to the Ko-Bizen school. Although this blade has been greatly shortened (O-suriage), it is a rare and valuable piece that retains the elegant shape characteristic of the Heian period. It displays the distinctive features of Ko-Bizen workmanship, including utsuri in the jigane and a delicate ko-midare hamon with a softly nioikuchi, giving the blade a profound and captivating character. The blade was polished by Sotaro Matsumura, a Mukansa-ranked sword polisher.<\/p>\n

Koshirae:
\nFuchikashira and Kojiri: Iron, chidori (plover) design.
\nTsuba: Copper based tsuba with shibuichi rim.
\nMenuki: Paulownia design.<\/p>\n

NBTHK Hozon Certificate
\nAoi-Art estimation Paper
\nwhole Oshigata<\/p>\n

Please note: the price does not include the shipping fees.
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Katana in Shirasaya with Koshirae (NBTHK Tokubetsu Hozon Token) Inscription: Mumei(Unsigned)(Kobizen \u53e4\u5099\u524d) We divide works in to Saijo Saku, Jyojyo Saku, Jyo Saku,and Regular Saku. This piece is ranked as Jyojyo Saku for Mumei(Kobizen). Habaki: gold-plated single habaki Blade Length: 61.3cm (24.13in) Curvature: 1.5cm (0.59in) Mekugi-ana: 2 Motohaba: 2.45cm (0.96in) Sakihaba: 3.31cm (1.30in) Kasane: 0.34cm […]\n","protected":false},"featured_media":0,"template":"","meta":[],"product_brand":[],"product_cat":[123,122],"product_tag":[],"class_list":["post-34052","product","type-product","status-publish","product_cat-katana-en","product_cat-sword-en","first","instock","sold-individually","shipping-taxable","product-type-auction"],"_links":{"self":[{"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product\/34052","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=34052"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product_brand?post=34052"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product_cat?post=34052"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/sword-auction.com\/en\/wp-json\/wp\/v2\/product_tag?post=34052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}