Power sat in Kamakura, but taste was still made in Kyōto. The Awataguchi school’s pear-skin steel became a byword for perfection, and the Rai line supplied dignified tachi to the court, senior warriors, and the great temples alike.
This is a rare tachi attributed to Rai Kuniyuki, the founder of the Rai school, from the mid-Kamakura period. It features a nagasa of 69.7cm and a sori of 1.9cm, housed in a shirasaya with a tachi koshirae. The blade is certified as Tokubetsu Hozon by the NBTHK, indicating its high quality and historical significance.
NihontoWatchmumei · Rai · Shogen (1259-1260) · nagasa 69.7cm · sori 1.9cm
Rai (Yamashiro), Rai Kuniyuki · Yamashiro · around 1259-1260
Fujishiro Sai-jo saku · Tōken Taikan top 2%
2 pieces on the market now
Rai Kuniyuki was, in the words the published sources return to again and again, the de facto founder of the Rai school of Yamashiro, working in the mid Kamakura period. None of his own blades carries a production date, but the two-character Kunitoshi, transmitted as his son, left a tachi dated Koan 1 (1278), and on that footing the published sources affirm the usual reckoning that places Kuniyuki around the Shogen and Bun'o years. He stands at the head of the line the late-Kamakura Yamashiro tradition would be built upon, and his signed tachi survive in comparatively large numbers while a single reliable tanto is all that is known, exactly as for that same Kunitoshi.
The shape of his tachi is not one thing. The published sources describe a range that runs from slender, orthodox builds to broad, powerfully made blades, with the point typically tied off in an ikubi manner. The signed, ubu pieces keep a high, wheel-like curvature and a small point of real grace; the great mass of the surviving work is o-suriage and unsigned, wide in the body with a thick kasane, and even after shortening it holds a deep wazori and a weighty, dignified bearing that reads at once as mid Kamakura.
The jigane is the constant. It is a finely forged ko-itame, at times carrying itame, mokume and a little nagare-hada, worked until it is dense and refined; over it the ji-nie lies thickly in minute particles, fine chikei enter, and a nie-utsuri rises that in places shades toward a midare-utsuri. The steel is strong and clear, and the bright, refined forging that the connoisseur reads as Rai-hada is the first thing the eye should settle on. This is the calm, lustrous jigane on which everything else is staged.
Over that jigane Kuniyuki tempers a wide, suguha-toned ha rather than the full choji of contemporary Bizen. Into it he mixes ko-choji, ko-gunome, small midare and squared-off elements, so that the temper is complex and changeful without ever becoming a clamorous midare; ashi and yo enter densely, often as the Kyoto-style saka-ashi, the nioiguchi runs deep and bright, ko-nie attaches thickly, and kinsuji and sunagashi move through the body of the ha. At the crests of the undulations small tobiyaki and yubashiri sometimes gather into a kiji-mata or gan-mata figure, and muneyaki may appear above. It is a temper of restraint and activity at once, the activity carried in the nie rather than in the height of the pattern.
The boshi is where his hand is most easily misjudged. It is not a plain ko-maru. A ko-maru is indeed the most frequent turnback, but it is most often drawn out by hakikake, the brushed nie of the point continuing the work of the ji below; the published sources describe a boshi that vigorously brushes[[c:1]] and that turns back in a small round with a slightly pointed tendency[[c:2]]. In many blades it falls into a midare-komi with a pointing tip[[c:3]], at times genuinely pointed, at times burned through in a yakizume manner. A reading that names only the small round and the irregular turnback misses the swept tip that is in fact the dominant feature, and for recognition the hakikake belongs in the first rank of his boshi traits beside the ko-maru itself.
For a founder of his rank the named histories are heavy. A signed Tokubetsu-Juyo tachi descended in the Kuroda family of Chikuzen and carries an origami of Genroku 14 (1701) by Hon'ami Kochu[[c:4]] valuing it at one thousand kan, with Goto fittings on its tachi mounting; another o-suriage blade passed through the Shimazu family of Satsuma; signature variants are read against a piece formerly in the Ogasawara collection, and his blades reach into the Tokugawa houses as well. His work numbers a National Treasure and many Important Cultural Properties, and within the published catalogues his Tokubetsu-Juyo and Juyo entries together run to roughly a hundred, a count that places him among the very highest of the koto Yamashiro masters and makes a freely tradeable example a genuine rarity.
Where Kuniyuki stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Yamashiro-den · Yamashiro
46 pieces on the market now
A calm, lustrous steel is the first thing the connoisseur's eye is meant to settle on with the Rai school: a finely forged ko-itame (小板目) worked until it is dense and refined, over which the ji-nie lies thickly in minute particles, fine chikei (地景) enter, and a nie-utsuri rises in the ji. This bright, refined jihada, the surface the trade reads as Rai-hada when its softer, looser patches intrude, is the constant beneath every manner the house produced. The school took shape in Kyoto in the mid-Kamakura period around the workshop of Rai Kuniyuki (來國行), the de facto founder of the line, whose chronology is reckoned from the Koan 1 (1278) tachi of his transmitted son. From Kuniyuki the Yamashiro-den tradition of late Kamakura was built, carried by Niji Kunitoshi, the two-character 國俊, traditionally his son and the nearest of the house to his hand; by the three-character Rai Kunitoshi, the first to crown his name with the character Rai, a practice all who followed took from him; and onward through Rai Kunimitsu (來國光), Rai Kunitsugu (來國次) and the lesser names Kunizane, Tomokuni, Kunihide and Mitsukane into the early Nanbokucho period. Whether the two Kunitoshi are one smith or two remains the classic open question of the school, argued from a span of dated work running about forty years from Koan 1 to Genko 1 (1321). What unites the house is a temper of restraint and activity at once, its life carried in the nie rather than in the height of the pattern. Against Kuniyuki's wide, suguha-toned ha and against the refined chu- or hoso-suguha of the three-character line, the smiths mix ko-choji, ko-gunome and small midare; ashi and yo enter densely, often as the Kyoto-style kyo-sakaashi (京逆足) that slants back toward the nakago, the opposite of the Bizen direction; the nioiguchi runs deep and bright, ko-nie attaches thickly, and kinsuji and sunagashi move through the body of the ha. The boshi is the school's most misjudged trait: a ko-maru drawn out by hakikake, the brushed nie of the point continuing the work of the ji below, often falling into midare-komi with a pointing tip. Muneyaki along the back recurs often enough that the records name it a habit of the Rai hand, and carving in the groove, suken or gomabashi with an added side hi, is a practice the texts call peculiar to Rai work. The strength of the nie within the ha, the utsuri rising as a nie-utsuri, and the kyo-sakaashi are precisely the marks that part Niji Kunitoshi's choji-dominant midare, which the old books said resembles the Bizen Ichimonji, from the Ichimonji itself.
Where the early masters keep this calm Kyoto register, the late line bends toward Soshu-den: Kunitsugu, counted among the Ten Brilliant Pupils of Masamune and named Kamakura-Rai, shows the strongest nie of ji and ha in the whole school, a notare mixed with gunome the earlier Rai never had. For a collector the house style is the recognition tool. An unsigned, o-suriage katana settles to Rai when the packed ko-itame, the fine nie over it, the standing utsuri and the kyo-sakaashi read together; the named smith is then fixed by degree. Niji Kunitoshi and the three-character Kunitoshi, both graded Sai-jo saku by Fujishiro, anchor the canon, the latter unusually approachable because his signed work is abundant and roughly half of it tanto, late Yamashiro work in its purest form. Kunimitsu, the most prolific and most versatile of the house, gives the impression of surpassing his father in force; Kunitsugu, graded Jo-jo saku, is the Soshu-facing edge whose signed tachi are scarce. Mitsukane, the Chudo Rai who withdrew to forge on Mt. Hiei, stands apart as the strong pole, his ji-nie laid thicker than Kunitoshi's or Kunimitsu's and likened upward to Awataguchi Yoshimitsu; the smaller Kunizane, Tomokuni and Kunihide carry the jigane a step into the Nanbokucho. The provenance roll is of the first rank, with blades worn by Ieyasu and held beside the Honjo Masamune, meibutsu such as the Aizen Kunitoshi, the Torikai Kunitsugu and the Midare-Mitsukane, and descent through the Owari and Kishu Tokugawa, the Maeda, Uesugi and Shimazu houses. Much sits locked as National Treasure and patrimony, yet the Juyo tier of the major names, and the whole record of the minor hands, remains a goal a serious collector can actually reach. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Kuniyuki國行 | 1259-1260 | 125 |
| Kunitoshi國俊 | 1278-1288 | 79 |
| Kunitsugu國次 | 1311-1327 | 65 |
| Kunimitsu國光 | 1326-1351 | 259 |
| Kunitoshi國俊 | 1288-1319 | 196 |
Yamashiro in the Kamakura period
Power sat in Kamakura, but taste was still made in Kyōto. The Awataguchi school’s pear-skin steel became a byword for perfection, and the Rai line supplied dignified tachi to the court, senior warriors, and the great temples alike.
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official site¥3,000,000
This is a rare tachi attributed to Rai Kuniyuki, the founder of the Rai school, from the mid-Kamakura period. It features a nagasa of 69.7cm and a sori of 1.9cm, housed in a shirasaya with a tachi koshirae. The blade is certified as Tokubetsu Hozon by the NBTHK, indicating its high quality and historical significance.
NihontoWatchmumei · Rai · Shogen (1259-1260) · nagasa 69.7cm · sori 1.9cm
Rai (Yamashiro), Rai Kuniyuki · Yamashiro · around 1259-1260
Fujishiro Sai-jo saku · Tōken Taikan top 2%
2 pieces on the market now
Rai Kuniyuki was, in the words the published sources return to again and again, the de facto founder of the Rai school of Yamashiro, working in the mid Kamakura period. None of his own blades carries a production date, but the two-character Kunitoshi, transmitted as his son, left a tachi dated Koan 1 (1278), and on that footing the published sources affirm the usual reckoning that places Kuniyuki around the Shogen and Bun'o years. He stands at the head of the line the late-Kamakura Yamashiro tradition would be built upon, and his signed tachi survive in comparatively large numbers while a single reliable tanto is all that is known, exactly as for that same Kunitoshi.
The shape of his tachi is not one thing. The published sources describe a range that runs from slender, orthodox builds to broad, powerfully made blades, with the point typically tied off in an ikubi manner. The signed, ubu pieces keep a high, wheel-like curvature and a small point of real grace; the great mass of the surviving work is o-suriage and unsigned, wide in the body with a thick kasane, and even after shortening it holds a deep wazori and a weighty, dignified bearing that reads at once as mid Kamakura.
The jigane is the constant. It is a finely forged ko-itame, at times carrying itame, mokume and a little nagare-hada, worked until it is dense and refined; over it the ji-nie lies thickly in minute particles, fine chikei enter, and a nie-utsuri rises that in places shades toward a midare-utsuri. The steel is strong and clear, and the bright, refined forging that the connoisseur reads as Rai-hada is the first thing the eye should settle on. This is the calm, lustrous jigane on which everything else is staged.
Over that jigane Kuniyuki tempers a wide, suguha-toned ha rather than the full choji of contemporary Bizen. Into it he mixes ko-choji, ko-gunome, small midare and squared-off elements, so that the temper is complex and changeful without ever becoming a clamorous midare; ashi and yo enter densely, often as the Kyoto-style saka-ashi, the nioiguchi runs deep and bright, ko-nie attaches thickly, and kinsuji and sunagashi move through the body of the ha. At the crests of the undulations small tobiyaki and yubashiri sometimes gather into a kiji-mata or gan-mata figure, and muneyaki may appear above. It is a temper of restraint and activity at once, the activity carried in the nie rather than in the height of the pattern.
The boshi is where his hand is most easily misjudged. It is not a plain ko-maru. A ko-maru is indeed the most frequent turnback, but it is most often drawn out by hakikake, the brushed nie of the point continuing the work of the ji below; the published sources describe a boshi that vigorously brushes[[c:1]] and that turns back in a small round with a slightly pointed tendency[[c:2]]. In many blades it falls into a midare-komi with a pointing tip[[c:3]], at times genuinely pointed, at times burned through in a yakizume manner. A reading that names only the small round and the irregular turnback misses the swept tip that is in fact the dominant feature, and for recognition the hakikake belongs in the first rank of his boshi traits beside the ko-maru itself.
For a founder of his rank the named histories are heavy. A signed Tokubetsu-Juyo tachi descended in the Kuroda family of Chikuzen and carries an origami of Genroku 14 (1701) by Hon'ami Kochu[[c:4]] valuing it at one thousand kan, with Goto fittings on its tachi mounting; another o-suriage blade passed through the Shimazu family of Satsuma; signature variants are read against a piece formerly in the Ogasawara collection, and his blades reach into the Tokugawa houses as well. His work numbers a National Treasure and many Important Cultural Properties, and within the published catalogues his Tokubetsu-Juyo and Juyo entries together run to roughly a hundred, a count that places him among the very highest of the koto Yamashiro masters and makes a freely tradeable example a genuine rarity.
Where Kuniyuki stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Yamashiro-den · Yamashiro
46 pieces on the market now
A calm, lustrous steel is the first thing the connoisseur's eye is meant to settle on with the Rai school: a finely forged ko-itame (小板目) worked until it is dense and refined, over which the ji-nie lies thickly in minute particles, fine chikei (地景) enter, and a nie-utsuri rises in the ji. This bright, refined jihada, the surface the trade reads as Rai-hada when its softer, looser patches intrude, is the constant beneath every manner the house produced. The school took shape in Kyoto in the mid-Kamakura period around the workshop of Rai Kuniyuki (來國行), the de facto founder of the line, whose chronology is reckoned from the Koan 1 (1278) tachi of his transmitted son. From Kuniyuki the Yamashiro-den tradition of late Kamakura was built, carried by Niji Kunitoshi, the two-character 國俊, traditionally his son and the nearest of the house to his hand; by the three-character Rai Kunitoshi, the first to crown his name with the character Rai, a practice all who followed took from him; and onward through Rai Kunimitsu (來國光), Rai Kunitsugu (來國次) and the lesser names Kunizane, Tomokuni, Kunihide and Mitsukane into the early Nanbokucho period. Whether the two Kunitoshi are one smith or two remains the classic open question of the school, argued from a span of dated work running about forty years from Koan 1 to Genko 1 (1321). What unites the house is a temper of restraint and activity at once, its life carried in the nie rather than in the height of the pattern. Against Kuniyuki's wide, suguha-toned ha and against the refined chu- or hoso-suguha of the three-character line, the smiths mix ko-choji, ko-gunome and small midare; ashi and yo enter densely, often as the Kyoto-style kyo-sakaashi (京逆足) that slants back toward the nakago, the opposite of the Bizen direction; the nioiguchi runs deep and bright, ko-nie attaches thickly, and kinsuji and sunagashi move through the body of the ha. The boshi is the school's most misjudged trait: a ko-maru drawn out by hakikake, the brushed nie of the point continuing the work of the ji below, often falling into midare-komi with a pointing tip. Muneyaki along the back recurs often enough that the records name it a habit of the Rai hand, and carving in the groove, suken or gomabashi with an added side hi, is a practice the texts call peculiar to Rai work. The strength of the nie within the ha, the utsuri rising as a nie-utsuri, and the kyo-sakaashi are precisely the marks that part Niji Kunitoshi's choji-dominant midare, which the old books said resembles the Bizen Ichimonji, from the Ichimonji itself.
Where the early masters keep this calm Kyoto register, the late line bends toward Soshu-den: Kunitsugu, counted among the Ten Brilliant Pupils of Masamune and named Kamakura-Rai, shows the strongest nie of ji and ha in the whole school, a notare mixed with gunome the earlier Rai never had. For a collector the house style is the recognition tool. An unsigned, o-suriage katana settles to Rai when the packed ko-itame, the fine nie over it, the standing utsuri and the kyo-sakaashi read together; the named smith is then fixed by degree. Niji Kunitoshi and the three-character Kunitoshi, both graded Sai-jo saku by Fujishiro, anchor the canon, the latter unusually approachable because his signed work is abundant and roughly half of it tanto, late Yamashiro work in its purest form. Kunimitsu, the most prolific and most versatile of the house, gives the impression of surpassing his father in force; Kunitsugu, graded Jo-jo saku, is the Soshu-facing edge whose signed tachi are scarce. Mitsukane, the Chudo Rai who withdrew to forge on Mt. Hiei, stands apart as the strong pole, his ji-nie laid thicker than Kunitoshi's or Kunimitsu's and likened upward to Awataguchi Yoshimitsu; the smaller Kunizane, Tomokuni and Kunihide carry the jigane a step into the Nanbokucho. The provenance roll is of the first rank, with blades worn by Ieyasu and held beside the Honjo Masamune, meibutsu such as the Aizen Kunitoshi, the Torikai Kunitsugu and the Midare-Mitsukane, and descent through the Owari and Kishu Tokugawa, the Maeda, Uesugi and Shimazu houses. Much sits locked as National Treasure and patrimony, yet the Juyo tier of the major names, and the whole record of the minor hands, remains a goal a serious collector can actually reach. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Kuniyuki國行 | 1259-1260 | 125 |
| Kunitoshi國俊 | 1278-1288 | 79 |
| Kunitsugu國次 | 1311-1327 | 65 |
| Kunimitsu國光 | 1326-1351 | 259 |
| Kunitoshi國俊 | 1288-1319 | 196 |
Yamashiro in the Kamakura period
Power sat in Kamakura, but taste was still made in Kyōto. The Awataguchi school’s pear-skin steel became a byword for perfection, and the Rai line supplied dignified tachi to the court, senior warriors, and the great temples alike.
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official site¥3,000,000
