Two courts, sixty years of war, and the most dramatic silhouettes in the sword’s history: broad blades, extended points, true ōdachi later cut down into the majestic katana collectors prize. The Sōshū manner was the style of the age.
NihontoWatchNihontoWatch奥州の地は、古くは奈良時代より多数の鍛冶がおり、同地の奥州鍛冶が日本刀の源流を成すと刀剣古書に記されます。現存作については、そのほとんどが鎌倉時代以降となり、「舞草(もくさ/もろぐさ」や「月山」、「玉造」が代表的な刀工群として有名であります。宝寿(寶壽)は平安時代後期頃、同国を根拠地とした刀工より始まるとされ、時代下って、鎌倉時代中後期、南北朝時代、室町時代に同銘作品が確認されています。「重要文化財 黒漆太刀 宝寿(武蔵御岳神社蔵)」や「重要美術品 額銘 宝寿(一関市博物館蔵)」、「重要文化財 太刀 宝寿(静嘉堂文庫美術館蔵)」等が有名作として広く知られています。鍛は板目肌が大模様、流れ肌交じるなどして肌立ち、刃文は直刃調に互の目、小乱れ刃などを交えて総体沸づくなどの作風を示します。 本作刃長が二尺二寸九分、身幅広くあって元先で幅差なく、重ねやや薄めで、切っ先が鋭く延びた南北朝体配の力強い刀姿の一口です。地鉄は、板目肌が大模様で流れごころに、地沸を微塵に敷いて、処々荒い沸が粒立って付き、総体肌がよく現れて、同工の作域がよく示されます。刃文は、直調子に互の目、小互の目、浅い湾れなどを交えて匂口柔らかに明るく冴えます。刃中には足・葉が入り、一部湯走りが掛かって働きます。帽子はそのまま乱れて先丸く返ります。茎は大磨上げで、鉄味がしっとりと落ち着いた風合いとなります。本刀は後代宝寿に鑑せられた一作で、姿や出来栄えより、南北朝時代中期から室町時代初期にかけてのものとみられます。奥州鍛冶独自の風合いを呈す鋭利で豪壮な体躯の優刀です。白鞘、金着二重はばき、保存刀剣鑑定書。
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Wakimono · Oshu
Among the swordsmiths said by old transmitted records to have worked in Ōshū (Mutsu and the wider northeast) from the Nara and Heian periods through the Kamakura age, the setsumei repeatedly observe that, of works actually surviving today, almost the only name that can be confirmed is Hōju (宝寿). The line is set within the Maikusa (Mokusa) sphere of Ōshū smiths, a group transmitted from the early Kamakura period onward; one tachi is described as a branch of the Maikusa smiths of Mutsu, and a Nanbokuchō entry pairs Hōju with Maikusa and, after Nanbokuchō, the Gassan group. The name itself was carried across a long span, from Kamakura through Nanbokuchō and into the Muromachi Ōei era, so that "Hōju" denotes a lineage rather than a single hand. A complicating thread runs through the corpus: one blade dated Enkyō 4 (1311) is signed Yamato-kuni-jū Tōmoto Hōju, raising the question of movement between Ōshū and Yamato, with the setsumei suggesting exchange of smiths through Shugendō mountain practice. Dated survivors anchor the chronology firmly, with inscriptions of Shōchū 2 (1325), Eiwa 2 (1376), Eitoku 2 (1382), and a run of Ōei years (5, 6, 12, 14, 22, 25). The shared hand the setsumei describe is an archaic northern one. The forging is itame mixed with mokume and nagare-hada, frequently with ō-itame, the grain standing up (hada-dachi) and at times an ayasugi-like or, near the edge, masame tendency; thick ji-nie gathers and bold chikei enter, the steel inclining to a blackish tone with a whitish cast, and shirake-utsuri rising in the ground. The temper is built on suguha and suguha-chō passing into ko-midare, or a shallow notare joined with ko-gunome and ko-notare; the habuchi shows frequent hotsure, kinsuji and sunagashi run vigorously, and a yaki-otoshi often drops the hardened edge at the machi.
The nioiguchi tends to shizumi and urumi, subdued and moist rather than bright, though certain pieces run brighter. The bōshi enters midare-komi or yakizume with hakikake, and the carvings, bonji over a sankō-tsuka-ken, are rustic yet carry an elegant taste. To recognize the hand, read the standing large-grained hada, the dark steel with whitish utsuri, and the quiet nioiguchi, set against the heroic koshizori tachi form. For kantei, the diagnostic cluster is the combination of standing ō-itame with bold chikei, blackish steel under whitish utsuri, yaki-otoshi at the base, and the subdued nioiguchi with hotsure, kinsuji, and sunagashi, the whole carrying a frankly provincial character that the setsumei treat as the lineage's signature. Signature study is itself a kantei tool: the two-character Hōju mei of the Eitoku-era tachi recorded in Honma's inventory of the Imperial collection is read against an orikaeshi-mei example dated Eitoku, certified an Important Art Object, to date later works by the same chisel. Named survivors map the standing: two signed tachi recorded in Honma's inventory of the Imperial collection, the kinzōgan-mei katana carrying a Hon'ami Kōchū origami of Kyōhō 7 (1722), the Shōchū 2 tachi held by Mitake Shrine, and an ubu mumei ōdachi transmitted as a hereditary treasure of the Murakami, the maritime warriors of the Seto Inland Sea. Ubu, signed, and dated Hōju, especially those not descending past early Nanbokuchō, the setsumei prize as reference material for an Ōshū tradition otherwise known largely through this one enduring name. Learn more →
The Nanbokuchō period (1333 to 1392)
Two courts, sixty years of war, and the most dramatic silhouettes in the sword’s history: broad blades, extended points, true ōdachi later cut down into the majestic katana collectors prize. The Sōshū manner was the style of the age.
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