{"id":30954,"date":"2026-04-05T09:27:57","date_gmt":"2026-04-05T00:27:57","guid":{"rendered":"https:\/\/sword-auction.com\/?post_type=product&p=30954"},"modified":"2026-04-05T09:27:57","modified_gmt":"2026-04-05T00:27:57","slug":"as25012-katana-yoshinoyama-nihon-gassan-seiten-saku-yamato-hosho-sadamune-den-nbthk-tokubetsu-hozon-token","status":"publish","type":"product","link":"https:\/\/sword-auction.com\/en\/product\/30954\/as25012-katana-yoshinoyama-nihon-gassan-seiten-saku-yamato-hosho-sadamune-den-nbthk-tokubetsu-hozon-token\/","title":{"rendered":"AS25012 Katana: Yoshinoyama Nihon Gassan Seiten Saku Yamato Hosho Sadamune-den (NBTHK Tokubetsu Hozon Token)"},"content":{"rendered":"

Ordering Number: AS25012<\/p>\n

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

Signature:
\nYamato Hosho Sadamune-den \u5927\u548c\u4fdd\u660c\u8c9e\u5b97\u4f1d
\nYoshinoyama Nihon Gassan Seiten Saku \u5409\u91ce\u5c71\u65e5\u672c\u6708\u5c71\u7cbe\u935b\u4f5c
\nShowa 12 nen 3 Gatsu Kichijitsu (March, 1937) \u662d\u548c\u5341\u4e8c\u5e74\u4e09\u6708\u5409\u65e5<\/p>\n

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

Habaki: Single-layer silver, Gassan-style Habaki.
\nBlade Length: 67.6 cm (26.61 in)
\nCurvature: 2.2 cm (0.87 in)
\nMekugi Hole: 1
\nWidth at Base (Motohaba): 2.98 cm (1.17 in)
\nWidth at Yokote (Sakihaba): 1.82 cm (0.72 in)
\nThickness of rim (Kasane): 0.71 cm (0.28 in)
\nSword Weight: 710 grams
\nEra: March, Showa 12 (1937)
\nShape: The blade has a solid width and slightly thick kasane with a visible ubuha (original temper).
\nIt is a healthy piece with deep curvature and extended kissaki.
\nJigane: Well-forged straight grain (masame-hada) with ji-nie and the same straight grain pattern on the shinogi-ji.
\nHamon: Tight masame-hada with ji-nie and a midare-komi boshi.
\nThe blade contains sunagashi and kinsuji activities.<\/p>\n

Features:
\nThis sword is a work of Gassan Sadakatsu, made in the tradition of Yamato Hosho Sadamune.
\nThe masame-hada is excellently forged and the polish is outstanding.
\nHighly recommended piece.
\nIt is believed that Sadakatsu made this sword in place of Sadakazu due to his advanced age.
\nThis work shows a highly skilled execution of the difficult masame-hada.<\/p>\n

NBTHK Tokubetsu Hozon Token Certificate
\nAoiArt estimation paper: Whole Oshigata
\n*Shipping fee is not included in the price.
\n\"\"<\/a>\"\"<\/a>\"\"<\/a>
\n\"\"<\/a>\"\"<\/a>\"\"<\/a>\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Ordering Number: AS25012 Katana in Shirasaya (NBTHK Tokubetsu Hozon Token) Signature: Yamato Hosho Sadamune-den \u5927\u548c\u4fdd\u660c\u8c9e\u5b97\u4f1d Yoshinoyama Nihon Gassan Seiten Saku \u5409\u91ce\u5c71\u65e5\u672c\u6708\u5c71\u7cbe\u935b\u4f5c Showa 12 nen 3 Gatsu Kichijitsu (March, 1937) \u662d\u548c\u5341\u4e8c\u5e74\u4e09\u6708\u5409\u65e5 We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku. This piece is ranked as Jyojyo Saku among […]\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-30954","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\/30954","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=30954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}