説明

Modern Japanese Sword Katana Signed by Gassan Sadakatsu with Tokubetsu Hozon Certificate 【Description】 Summary This blade was signed by Osaka Jyunin Gassan Sadakatsu (大阪住月山貞勝) in Nov the 9th year of the Taisho era (1920). Osaka Jyu means that he lived in Osaka when he forged this blade. Gassan is the name of a prestigious school. Gassan Sadakatsu was born in Osaka in the second year of the Meiji era (1869) as the son of Gassan Sadakazu and grandson of Gassan Sadayoshi, two of the most famous swordsmiths during the late Edo-early Meiji period. Sadakatsu learned sword-forging techniques from his father in his childhood. You can barely find the blades signed by him before the 7th year of the Taisho era (1918) because he dedicated himself to assisting his father. In that sense, this blade is very rare one. From the 10th year of the Taiso era (1920), his craftsmanship was highly recognized by Ichiki Kitokuro, Minister of the Imperial House. And, Sadakatsu was assigned to forge blades for the imperial family members. Sadakatsu also forged many blades for the Japanese navy/army generals. After his father, Gassan Sadakazu, deceased, Sadakatsu took over Gassan school and trained many skilled apprentices. Gassan Sadakazu, his third son, and Takahashi Sadatugu, his apprentice, became the national treasures of Japan in their career. Sadakatsu died on December 24th, 1943. Gassan School Gassan is the name of the school he belonged to. 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 Dewakoku. Gassan Sadakazu (His father) & Gassan Sadayoshi (His grandfather) Sadakazu was born as the son of the Tsukamoto family in Omi province(today’s Shiga prefecture) in 1836. Sadakazu was adopted by Gassan Sadayoshi(月山貞吉), one of the most famous swordsmiths in Osaka prefecture when he was seven years. Sadakazu started his training under Gassan Sadayoshi when he was 11 years old. And at incredible speed, he was able to master a lot of complex techniques. According to available records, his first blade was created in 1851 when he was 16 years old. Gassan Sadayoshi founded Gassan school in Osaka in 1833. While Gassan school had been 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 flourished again because of his continuous effort and superb craftsmanship. Gassan Sadakazu supported Sadayoshi, and they 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. Sadakatsu also mastered creating Ayasugiha and you can see this grain pattern on this blade. Horimono (Engraving) A dragon is beautifully engraved on one side. Initially, the dragon was an imaginary creature found in ancient foreign traditions or myths. Furthermore, it is regarded as a symbol of auspicious signs. Its body is likened to nine animals: antlers are deer, the head is a camel, eyes are demons, the neck is a snake, belly is the Mizuchi (蛟, a mythical animal in Japan that looks like a snake and has a horn and four legs), scales are fish, claws are falcons, palms are tigers, and ears are cows. It was thought that the dragon would reign at the top of all animals because of its odd-looking appearance. And, the other side shows (梵字, Sanskrit letter)。 This blade is appraised as a Tokubetsu Hozon Token (特別保存刀剣) 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, especially well preserved and high quality with artistic value. *Please keep in mind that there is partial chip near the Monouchi area slight belo

Modern Japanese Sword Katana Signed by Gassan Sadakatsu NBTHK Tokubetsu Hozon Certificate
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Modern Japanese Sword Katana Signed by Gassan Sadakatsu NBTHK Tokubetsu Hozon Certificate

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仕様

長さ

66.9 cm

反り

1.51 cm

流派について

Gassan School月山派

月山は、出羽国に聳える月山に因んで称された一派である。月山は出羽三山修験道の名山であり、この山号を銘とする刀工は、すでに平安時代から存在したことが『観智院本銘尽』に記されている。古来その鍛冶は平安時代末期に始まると伝えるが、現存する最古の有銘作は南北朝期の制作と鑑せられるもので、出羽三山神社所蔵の重要美術品の太刀がこれにあたる。収録される作には、現存の在銘作で最も古い部類に属する「月山」銘の太刀をはじめ、南北朝期の年紀をもつ勝軍、銘鑑にいわゆる羽州月山一派暦応頃に該当する長光、室町後期の月山近則、さらに時代下って幕末から明治にかけて大坂に出た月山貞一に及び、出羽に発した古い月山から後代に至るまでの広がりを示している。山岳信仰を背景とするこの一派は、長く東北の地にあって独自の作域を伝えてきた。 作風の最大の特色は、鍛え肌が綾杉模様にうねって流れ、その窪みの部分に渦巻状の杢目を交える、いわゆる綾杉肌を示すところにある。匂口の沈んだ直刃を焼く点は各時代に共通し、地沸がつき、直刃調から小乱れ、小互の目を交える刃文が見られる。鉄はかな色に黒みをおびて奥州気質を看取させ、奥州物らしく沸崩れて締らず匂口の冴えに乏しいものもある。ただし末流においては綾杉肌のあらわれぬ作もあり、月山近則の作中には備前伝の作風を示して長船鍛冶との技術交流を窺わせるものがある。後代大坂の月山貞一は、山城・大和・相州・備前・美濃など諸流の伝法をこなしつつ、古い月山にならった綾杉肌を巧みに再現し、刀身彫刻においても優れた技倆を見せた。月山の見分けは、この綾杉肌と黒む東北の鉄、沈んだ直刃の調子に拠るところが大きい。 鑑定にあたっては、綾杉肌の有無とその出方、地鉄の黒みと沸の崩れ加減、彫物の手際を併せ見ることが要点となる。古い月山に綾杉肌の典型を求め、末流には肌のあらわれぬ場違的な作や備前伝の混じる作のあることを念頭に置く必要がある。代表的な作としては、出羽三山神社蔵の太刀が古作の基準となり、月山近則の在銘脇指、勝軍や長光の南北朝期の遺例が一派の展開を伝える。貞一には毘沙門・倶利伽羅・不動などを彫り、久邇宮への献上刀をはじめとする所伝の明らかな作が残る。修験の山に発し、綾杉肌という他に紛れぬ地鉄を看板として東北に伝えられたこの一派は、刀剣史のうえで独特の位置を占めている。

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