売切れ
Hozon売切れ
Antique Japanese Sword Katana Attributed to Gassan Sadayoshi NBTHK Hozon Certificate
売却済
世界81社の刀剣商を横断追跡 · 価格履歴 · 売却アーカイブ
仕様
長さ
76 cm
反り
2.72 cm
NihontoWatchBETA売切れ
Antique Japanese Sword Katana Attributed to Gassan Sadayoshi with Hozon Certificate 【Description】 This blade is attributed to the work of Gassan Sadayoshi(月山貞吉) by NBTHK, one of the most reputable Japanese sword appraising organizations. Gassan Sadayoshi’s real name is Gassan Yahachiro. He was born in Dewakoku(Yamagata prefecture today) in 1781 . Gassan is the name of the school he belonged. It was initially founded during the Heian period(late 12th century). It is said that the school name “Gassan” (月山) came from the fact that they forged swords near the mountain called Gassan. In Sadayoshi’s early career, he learned sword forging technique from his father, Okuyama Yasaburo Sadachika(山弥三郎貞近), who is said to have been a descendant of O-Shu Gassan school (奥州月山), one of the oldest Gassan schools. When Sadayoshi became about 20 years old, he went to Edo city(today’s Tokyo) to serve Suishinshi Masahide(水心子正秀) as an apprentice. Sushinshi Masahide is known as one of the most skilled and famous swordsmiths at the end of the Edo period(150-200 years ago). After ten years of apprenticeship under Masahide, Sadayoshi mastered excellent craftsmanship. And he moved to Osaka in 1833 when he was 30 years old. He founded Osaka Gassan school there, improving his sword-forging technique even more and eventually settled there. He also trained many apprentices, who later became notable swordsmiths at the end of the Edo period. While Gassan school was known as one of the most prestigious schools from the Kamakura period(late 12th century), its presence faded in the early-mid Edo period. However, after Sadayoshi became a highly-regarded swordsmith at the end of the Edo period, the whole school revitalized and flourished again because of his continuous effort. Sadayoshi adopted a son from Tsukamoto family and named him Sadakazu, who later became one of the most famous swordsmiths in the post Samurai period(Meiji era). Father and son spent many years researching traditional Gassan style swords and finally made Ayasugihada, the signature design of Gassan school. Ayasguhihada looks undulating grain pattern in the Jihada(steel surface), which resembles a Japanese cedar grain. Gassan Sadayoshi also forged other styles of swords aside from Ayasugi Hada Jihada. Gassan Sadayoshi died at the age of 71 in the third year of the Meiji era(1870). His son, Sadakazu, preserved the tradition of Gassan, and he passed it down to Sadakatsu. The Gassan school has been running for the 6th generation. The current Gassan alive is Gassan Kazutoshi, and his son is Gassan Sadanobu.They still keep forging traditional Japanese swords in Nara prefecture. We are confident you will appreciate this gorgeous long blade with beautiful engraving on the blade. This blade is appraised as a Hozon Token(保存刀剣) issued by NBTHK(Nihon Bijutsu Touken Hozon Kyokai:日本美術刀剣保存協会). This authentication paper was only given to authentic Japanese swords, well preserved with artistic value. 【 Blade】 Cutting Edge Length(Nagasa) : 76.0 cm( 29.9 inches) Curvature(Sori) : 2.72 cm( 1.07 inches) Hamon : The crystalline structure which forms along the cutting edge of a blade as a result of the hardening process Jimon(Jihada) : visible steel surface pattern created by folding and hammering during forging process Nakago : Nakago is the tang of the Japanese sword. Japanese swordsmiths left the black rust on the tang because it prevents red rust while the tang is in its handle. And the discoloration of the tang was created over time, and it is a great indicator for a Japanese sword specialist to estimate when the sword was forged. Horimono: Horimono is an inscription or sculpture on Japanese swords. The history of the Horimono (彫り物, blade sculpture) in Japan is old; it goes back about 1,300 years ago. Japanese swords initially had the Chokutou (直刀, straight blade) shape. And it changed its form to the Wantou (湾刀, curved blade) shape in the age when Samurais appeared. Samurais fought on the battlefields for thei
NihontoWatchBETA売却済
世界81社の刀剣商を横断追跡 · 価格履歴 · 売却アーカイブ
76 cm
2.72 cm
Mid Edo Katana signed by Tanba no Kami Yoshimichi for sale| Samurai Museum Shop E-mail FB Messenger Skip to content Menu Close Samurai Museum Shop Products Antique Japanese Sword Katana signed by Tanba no Kami Yoshimichi NTHK Kanteisho Certificate Updated: 22 Jun 2026 Antique Japanese Sword Katana signed by Tanba no Kami Yoshimichi NTHK Kanteisho Certificate
$7,441
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Early Edo Nihonto signed by Shigetaka for sale
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Antique Japanese Sword Katana Signed by Masahiro NBTHK Tokubetsu Hozon Certificate
$7,751
Antique Japanese Sword Katana Attributed to Gassan Sadayoshi with Hozon Certificate 【Description】 This blade is attributed to the work of Gassan Sadayoshi(月山貞吉) by NBTHK, one of the most reputable Japanese sword appraising organizations. Gassan Sadayoshi’s real name is Gassan Yahachiro. He was born in Dewakoku(Yamagata prefecture today) in 1781 . Gassan is the name of the school he belonged. It was initially founded during the Heian period(late 12th century). It is said that the school name “Gassan” (月山) came from the fact that they forged swords near the mountain called Gassan. In Sadayoshi’s early career, he learned sword forging technique from his father, Okuyama Yasaburo Sadachika(山弥三郎貞近), who is said to have been a descendant of O-Shu Gassan school (奥州月山), one of the oldest Gassan schools. When Sadayoshi became about 20 years old, he went to Edo city(today’s Tokyo) to serve Suishinshi Masahide(水心子正秀) as an apprentice. Sushinshi Masahide is known as one of the most skilled and famous swordsmiths at the end of the Edo period(150-200 years ago). After ten years of apprenticeship under Masahide, Sadayoshi mastered excellent craftsmanship. And he moved to Osaka in 1833 when he was 30 years old. He founded Osaka Gassan school there, improving his sword-forging technique even more and eventually settled there. He also trained many apprentices, who later became notable swordsmiths at the end of the Edo period. While Gassan school was known as one of the most prestigious schools from the Kamakura period(late 12th century), its presence faded in the early-mid Edo period. However, after Sadayoshi became a highly-regarded swordsmith at the end of the Edo period, the whole school revitalized and flourished again because of his continuous effort. Sadayoshi adopted a son from Tsukamoto family and named him Sadakazu, who later became one of the most famous swordsmiths in the post Samurai period(Meiji era). Father and son spent many years researching traditional Gassan style swords and finally made Ayasugihada, the signature design of Gassan school. Ayasguhihada looks undulating grain pattern in the Jihada(steel surface), which resembles a Japanese cedar grain. Gassan Sadayoshi also forged other styles of swords aside from Ayasugi Hada Jihada. Gassan Sadayoshi died at the age of 71 in the third year of the Meiji era(1870). His son, Sadakazu, preserved the tradition of Gassan, and he passed it down to Sadakatsu. The Gassan school has been running for the 6th generation. The current Gassan alive is Gassan Kazutoshi, and his son is Gassan Sadanobu.They still keep forging traditional Japanese swords in Nara prefecture. We are confident you will appreciate this gorgeous long blade with beautiful engraving on the blade. This blade is appraised as a Hozon Token(保存刀剣) issued by NBTHK(Nihon Bijutsu Touken Hozon Kyokai:日本美術刀剣保存協会). This authentication paper was only given to authentic Japanese swords, well preserved with artistic value. 【 Blade】 Cutting Edge Length(Nagasa) : 76.0 cm( 29.9 inches) Curvature(Sori) : 2.72 cm( 1.07 inches) Hamon : The crystalline structure which forms along the cutting edge of a blade as a result of the hardening process Jimon(Jihada) : visible steel surface pattern created by folding and hammering during forging process Nakago : Nakago is the tang of the Japanese sword. Japanese swordsmiths left the black rust on the tang because it prevents red rust while the tang is in its handle. And the discoloration of the tang was created over time, and it is a great indicator for a Japanese sword specialist to estimate when the sword was forged. Horimono: Horimono is an inscription or sculpture on Japanese swords. The history of the Horimono (彫り物, blade sculpture) in Japan is old; it goes back about 1,300 years ago. Japanese swords initially had the Chokutou (直刀, straight blade) shape. And it changed its form to the Wantou (湾刀, curved blade) shape in the age when Samurais appeared. Samurais fought on the battlefields for thei
NihontoWatchBETA売却済
世界81社の刀剣商を横断追跡 · 価格履歴 · 売却アーカイブ
76 cm
2.72 cm
Mid Edo Katana signed by Tanba no Kami Yoshimichi for sale| Samurai Museum Shop E-mail FB Messenger Skip to content Menu Close Samurai Museum Shop Products Antique Japanese Sword Katana signed by Tanba no Kami Yoshimichi NTHK Kanteisho Certificate Updated: 22 Jun 2026 Antique Japanese Sword Katana signed by Tanba no Kami Yoshimichi NTHK Kanteisho Certificate
$7,441
Muromachi Katana signed by Naminohira Yasuhide for sale
$7,751
Early Edo Nihonto signed by Shigetaka for sale
$7,131
Antique Japanese Sword Katana Signed by Masahiro NBTHK Tokubetsu Hozon Certificate
$7,751