{"id":30009,"date":"2026-01-27T11:25:41","date_gmt":"2026-01-27T02:25:41","guid":{"rendered":"https:\/\/sword-auction.com\/product\/30009\/as25647-%e5%88%80%ef%bc%9a%e9%85%92%e4%ba%95%e4%b8%80%e8%b2%ab%e6%96%8e%e7%b9%81%e6%94%bf%e7%84%a1%e7%9b%a3%e6%9f%bb%e5%88%80%e5%8c%a0-%e6%98%ad%e5%92%8c%e5%9b%9b%e5%8d%81%e4%ba%94%e5%b9%b4\/"},"modified":"2026-01-27T11:26:23","modified_gmt":"2026-01-27T02:26:23","slug":"as25647-%e5%88%80%ef%bc%9a%e9%85%92%e4%ba%95%e4%b8%80%e8%b2%ab%e6%96%8e%e7%b9%81%e6%94%bf%e7%84%a1%e7%9b%a3%e6%9f%bb%e5%88%80%e5%8c%a0-%e6%98%ad%e5%92%8c%e5%9b%9b%e5%8d%81%e4%ba%94%e5%b9%b4","status":"publish","type":"product","link":"https:\/\/sword-auction.com\/en\/product\/30009\/as25647-%e5%88%80%ef%bc%9a%e9%85%92%e4%ba%95%e4%b8%80%e8%b2%ab%e6%96%8e%e7%b9%81%e6%94%bf%e7%84%a1%e7%9b%a3%e6%9f%bb%e5%88%80%e5%8c%a0-%e6%98%ad%e5%92%8c%e5%9b%9b%e5%8d%81%e4%ba%94%e5%b9%b4\/","title":{"rendered":"AS25647 Katana\uff1a: Sakai Ikkansai Shigemasa (Mukansa Tosho) Auspicious day in August, 1970 (NBTHK Hozon Token)"},"content":{"rendered":"

Ordering number:AS25647<\/p>\n

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

Signature: Sakai Ikkansai Shigemasa (Mukansa Tosho)
\nAuspicious day in August, 1970
\n\u9152\u4e95\u4e00\u8cab\u658e\u7e41\u653f(\u7121\u76e3\u67fb\u5200\u5320)
\n\u662d\u548c\u56db\u5341\u4e94\u5e74\u516b\u6708\u5409\u65e5<\/p>\n

Sayagaki:\u3000Sakai Ikkansai Shigemasa
\nMukansa Tosho
\nAuspicious day in August, 1970
\nInstructor at the Nihonto Tanren Denshusho operated by Kurihara Hikosaburo
\nBlade length: 2 shaku 4 sun 9 bu 5 rin (approximately 75.6 cm \/ 29.76 in)
\nBizan (Kao)<\/p>\n

We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
\nThis sword is ranked as Jyojyo Saku for works by Sakai Ikkansai Shigemasa.
\nHabaki: Gold-covered single layer
\nBlade Length: 75.6 cm (29.76 in)
\nCurvature: 1.5 cm (0.59 in)
\nMekugi Hole: 1
\nWidth at Base (Motohaba): 3.27 cm (1.29 in)
\nWidth at Tip (Sakihaba): 2.35 cm (0.93 in)
\nThickness of Rim (Kasane): 0.63 cm (0.25 in)
\nSword Weight: 895 grams
\nShape: A wide-bodied sword with remaining ubuha (original blade edge), moderate curvature, and a slightly wide kissaki.
\nJigane: Finely forged ko-itame hada, dense and of excellent quality.
\nHamon: Nie-based gunome-midare with deep nioiguchi, well-developed ashi, and fine kinsuji within the ha. The boshi is rounded and returns. On one side, the nie becomes sweeping toward the tip.<\/p>\n

Features:\u3000Sakai Ikkansai Shigemasa was recognized as a Mukansa smith.
\n“Mukansa” is the highest rank given to swordsmiths by the NBTHK, requiring multiple top awards in their competitions.
\nHe was born in 1905 (Meiji 38) in Shizuoka as Sakai Kojiro. At age 16, in 1921 (Taisho 10), he decided to become a swordsmith and moved to become a disciple of Kasama Ikkansai Shigetsugu. He received the name \u201cShigemasa\u201d from his master.
\nIn 1941 (Showa 16), he was appointed as an army-commissioned swordsmith, and in 1944, he was also appointed by the navy.
\nAfter the war, he was certified as a Mukansa smith in 1981 (Showa 56). He later changed his name to Shigemasa and became known as a master of horimono (blade carvings), producing many works.
\nHe passed away in 1996 at the age of 91.<\/p>\n

Aoi Art\u2019s Comment:\u3000You may refer to the back side of the Shinshinto Taikan for detailed information about Shigemasa after he changed his name. He is a renowned Japanese swordsmith.
\nThe 1970 Japan World Exposition was held in the same year this sword was made.<\/p>\n

NBTHK Hozon Token
\nAoi Art estimation paper
\nWhole Oshigata
\n\uff0aShipping fee is not included in the price.<\/p>\n

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

Ordering number:AS25647 Katana in Shirasaya (NBTHK Hozon Token) Signature: Sakai Ikkansai Shigemasa (Mukansa Tosho) Auspicious day in August, 1970 \u9152\u4e95\u4e00\u8cab\u658e\u7e41\u653f(\u7121\u76e3\u67fb\u5200\u5320) \u662d\u548c\u56db\u5341\u4e94\u5e74\u516b\u6708\u5409\u65e5 Sayagaki:\u3000Sakai Ikkansai Shigemasa Mukansa Tosho Auspicious day in August, 1970 Instructor at the Nihonto Tanren Denshusho operated by Kurihara Hikosaburo Blade length: 2 shaku 4 sun 9 bu 5 rin (approximately 75.6 cm \/ […]\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-30009","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\/30009","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=30009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}