This is a mumei Katana attributed to Nariie of the Bizen Osafune school, designated as a 68th NBTHK Juyo Token. Dating from the Nanbokucho Period, circa mid-14th century, it features a wide and thick O-suriage blade with Koshizori and a large Kissaki. The jigane displays Itame mixed with Masa and flowing patterns with abundant Jinie and Chikei, while the hamon is Ko-nie deki Notare and Gunome.
備前国長船派の成家は、一説に景秀(光忠の弟)の子孫と伝え、南北朝時代後期に活躍した、所謂、小反りに属する刀工の一人である。しかしながら、銘鑑には文和から康安といった比較的年代の遡る年紀を挙げており、また作風及び銘字などから、兼光との関係も考えられ、今後の検討が俟たれるところである。彼の技術は同年代の兼光一門の政光に比して優るとも劣らぬものであり、のたれや互の目交じりの乱れ刃を得意とし、兼光に比すると大らかさに幾分不足する感がある。 この刀は、身幅広く大鋒となって南北朝期の時代性をよく呈し、地鉄は板目鍛えがやや肌立ちごころとなり、地景をしきりに交えて部分的に変わり鉄状に太く入るなど、不規則な肌合を呈し、焼刃は総じて焼低くのたれるなど、小反り一類に属する長船成家の見どころが顕現されている。とりわけ、手持ち重く豪壮な体配が迫力に満ちると共に変化ある鍛えに見応えが示された優品である。
mumei · Osafune · Nanbokucho · nagasa 71.4cm · sori 1.4cm





Kozori (Bizen Osafune) · Bizen · around 1352-1362
Fujishiro Chu-jo saku · Tōken Taikan top 18%
3 pieces on the market now
Nariie worked at Osafune in Bizen in the later Nanbokucho period, and the dated swords that fix his hand carry year-signatures running from Bunna and Joji through Koan, Oan and Eiwa, with one wakizashi signed and dated Koan 2 (1362). The biographical records make him a descendant of Kagehide, the younger brother of Mitsutada, but the published sources set that pedigree aside and place him by his workmanship among the Kozori smiths, the Osafune hands of the later fourteenth century who stand outside the direct line of Kanemitsu. The term Kozori is itself loosely drawn, the NBTHK allows, a convenience that gathers the late Nanbokucho smiths not tied as pupils to the Kanemitsu workshop. What the commentary returns to, blade after blade, is the relation to Kanemitsu read in both his manner and the script of his signature, a relation it declines to settle: 「兼光との関係も考えられ, 今後の検討が俟たれるところである」[[c:1]], that the connection is to be considered and the matter awaits further study. He is a smith known almost entirely from o-suriage mumei katana, his name reaching the published record at Important Cultural Property and twenty Juyo Token.
The hand that distinguishes him is a gunome-based midareba that at first glance is taken for Kanemitsu and is told from him on a closer look. Over the body he tempers small ko-gunome, ko-notare and pointed togariba, square-shouldered gunome and waist-open gunome also entering, the whole running, in the recurring phrase of the published sources, small and crowded (kozumu). The institution describes his favoured temper plainly, 「のたれや互の目交じりの乱れ刃を得意とし」[[c:2]], a midareba of notare and gunome mixed; what individualizes it is the variety of ha packed into a small pattern rather than any single shape. The judges set this against Kanemitsu directly. On one Juyo katana the commentary writes that the blade resembles Kanemitsu at a glance, then adds 「焼刃の互の目がこずむ傾向が窺われ」[[c:3]], that the gunome of the temper is seen to crowd, and finds in that crowding the mark by which it is to be read as Nariie. The work falls a little short of Kanemitsu's breadth, the sources repeat, though not of his skill.
His jigane is an itame carrying mokume and nagare-hada, the grain standing a little, with ji-nie attaching fine and chikei entering of an irregular changing-steel cast, sometimes coarse altered steel running thick through the surface, sometimes a jifu tone crossing it. A midare-utsuri rises, pale, the Bizen reflection of the period; on the most crowded small-pattern blades it reads instead as a straight utsuri, and the ji is carried as much by the standing itame and that kawarigane chikei as by the reflection. Through the yakiba ashi and yo enter well, the temper is nioi-prevailing with ko-nie, and kinsuji and sunagashi play finely along it. The boshi runs into the midare and points, returning to a ko-maru or burning out in a yakizume, hakikake brushing the turn. A bo-hi, on several blades carried with a soe-hi or beside the trace of a bonji, runs through the body. The sugata is the broad shape of the late Nanbokucho: a wide body with little taper from machi to point, a large kissaki, the curvature shallow, the build heavy in the hand, most often reached by o-suriage that has left the blade mumei.
The oeuvre divides on the nakago. A small group of ubu pieces keeps the original shape and the long signature with its year-date, the koshizori tachi and the broad, suriage-shortened hira-zukuri wakizashi among them, and these are the documentary anchor for everything else. The far larger part is o-suriage and mumei, attributed to him by the workmanship alone, and it is on these that the kantei argument is made and remade: a blade is read first as Kanemitsu's school, then resolved to Nariie by the smaller, more cluttered pattern, the mixture of many ha-types, and a touch of the rustic in the ji and ha. The year-dates carry their own weight in the scholarship. The records give him dates from Bunna and Koan that run relatively early for a Kozori smith, and the NBTHK marks them, treating the Koan 2 wakizashi as a good document and noting that such comparatively early signatures bear on where, within the loose Kozori grouping, his work should sit.
Within that grouping the published sources rank him high. They hold his skill equal to or above that of Masamitsu, a Kanemitsu pupil of his own generation, 「彼の技術は同年代の兼光一門の政光に比して優るとも劣らず」[[c:4]], and on one blade call him a representative smith of the Kozori group at the height of the Nanbokucho period. The comparison that frames him is therefore never a borrowing but a measure: he is placed beside Kanemitsu to be distinguished from him, his own typical traits leading the reading. His midare crowds where Kanemitsu's opens; his ji takes a changing-steel chikei and a pale utsuri where the Kanemitsu line runs cleaner; his temper gathers many small ha where theirs is more uniform. These are the features the judges name as his, and the resemblance survives in the prose only as the thing they are correcting.
The Fujishiro appraisal places Nariie at Chu-jo saku, and his designated record stands at one Important Cultural Property and twenty Juyo Token, with no National Treasure or Tokubetsu Juyo among them. The Important Cultural Property is patrimony, held outside the market as such designations are; the Juyo blades, almost all o-suriage mumei katana, are what a private collector might realistically hope to meet, and they come to hand only from time to time. Provenance is thinly recorded for his work: one katana is documented as having been carried by Imai Sadahiro, the castle elder of the Nishio domain in Mikawa, at the battle of Toba-Fushimi in the Boshin War, and descended with its red stone-grain lacquer scabbard mounting. Beyond that the owners of his blades are largely unrecorded, and what survives is best described as held in long-private hands. For a Kozori master read always against Kanemitsu, a signed and dated example is the rarer find, the o-suriage mumei katana the more usual one, and either is encountered with patience rather than at will.
Where Nariie 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.
Years he was demonstrably active, proven by signed-and-dated blades
Bizen-den · Bizen
24 pieces on the market now
The Kozori (小反り) form a loose body of Bizen smiths who worked at and around Osafune in the closing decades of the Nanbokucho period and on into early Muromachi, and the NBTHK defines them less by descent than by exclusion: they are the late-Osafune hands who fall outside the specific lineages of Kanemitsu, Chogi, Motoshige and the Omiya group, gathered under one name as a convenience. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Hidemitsu秀光 | 1375-1392 | 19 |
| Iesuke家助 | 1394-1428 | 11 |
| Iemori家守 | 1377-1406 | 15 |
| Nariie成家 | 1352-1362 | 21 |
| Moromitsu師光 | 1375-1390 | 7 |
A blade of top-grade workmanship and condition, formally judged to rank with a nationally recognized Important Art Object (Jūyō Bijutsuhin). Awarded only at the NBTHK’s competitive annual examination.
Of Japan’s roughly 2.5 million registered swords, only 12,307 (about 1 in 203) have ever attained Jūyō.
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 siteIf you wish to return an item, please notify us within 3 days of receipt. After this period we cannot accept cancellations. Please ship the return to us within 5 business days. Cancellation is conditional on the item being kept in the same condition as at the time of sale, so please handle it with care.
This is a mumei Katana attributed to Nariie of the Bizen Osafune school, designated as a 68th NBTHK Juyo Token. Dating from the Nanbokucho Period, circa mid-14th century, it features a wide and thick O-suriage blade with Koshizori and a large Kissaki. The jigane displays Itame mixed with Masa and flowing patterns with abundant Jinie and Chikei, while the hamon is Ko-nie deki Notare and Gunome.
備前国長船派の成家は、一説に景秀(光忠の弟)の子孫と伝え、南北朝時代後期に活躍した、所謂、小反りに属する刀工の一人である。しかしながら、銘鑑には文和から康安といった比較的年代の遡る年紀を挙げており、また作風及び銘字などから、兼光との関係も考えられ、今後の検討が俟たれるところである。彼の技術は同年代の兼光一門の政光に比して優るとも劣らぬものであり、のたれや互の目交じりの乱れ刃を得意とし、兼光に比すると大らかさに幾分不足する感がある。 この刀は、身幅広く大鋒となって南北朝期の時代性をよく呈し、地鉄は板目鍛えがやや肌立ちごころとなり、地景をしきりに交えて部分的に変わり鉄状に太く入るなど、不規則な肌合を呈し、焼刃は総じて焼低くのたれるなど、小反り一類に属する長船成家の見どころが顕現されている。とりわけ、手持ち重く豪壮な体配が迫力に満ちると共に変化ある鍛えに見応えが示された優品である。
mumei · Osafune · Nanbokucho · nagasa 71.4cm · sori 1.4cm





Kozori (Bizen Osafune) · Bizen · around 1352-1362
Fujishiro Chu-jo saku · Tōken Taikan top 18%
3 pieces on the market now
Nariie worked at Osafune in Bizen in the later Nanbokucho period, and the dated swords that fix his hand carry year-signatures running from Bunna and Joji through Koan, Oan and Eiwa, with one wakizashi signed and dated Koan 2 (1362). The biographical records make him a descendant of Kagehide, the younger brother of Mitsutada, but the published sources set that pedigree aside and place him by his workmanship among the Kozori smiths, the Osafune hands of the later fourteenth century who stand outside the direct line of Kanemitsu. The term Kozori is itself loosely drawn, the NBTHK allows, a convenience that gathers the late Nanbokucho smiths not tied as pupils to the Kanemitsu workshop. What the commentary returns to, blade after blade, is the relation to Kanemitsu read in both his manner and the script of his signature, a relation it declines to settle: 「兼光との関係も考えられ, 今後の検討が俟たれるところである」[[c:1]], that the connection is to be considered and the matter awaits further study. He is a smith known almost entirely from o-suriage mumei katana, his name reaching the published record at Important Cultural Property and twenty Juyo Token.
The hand that distinguishes him is a gunome-based midareba that at first glance is taken for Kanemitsu and is told from him on a closer look. Over the body he tempers small ko-gunome, ko-notare and pointed togariba, square-shouldered gunome and waist-open gunome also entering, the whole running, in the recurring phrase of the published sources, small and crowded (kozumu). The institution describes his favoured temper plainly, 「のたれや互の目交じりの乱れ刃を得意とし」[[c:2]], a midareba of notare and gunome mixed; what individualizes it is the variety of ha packed into a small pattern rather than any single shape. The judges set this against Kanemitsu directly. On one Juyo katana the commentary writes that the blade resembles Kanemitsu at a glance, then adds 「焼刃の互の目がこずむ傾向が窺われ」[[c:3]], that the gunome of the temper is seen to crowd, and finds in that crowding the mark by which it is to be read as Nariie. The work falls a little short of Kanemitsu's breadth, the sources repeat, though not of his skill.
His jigane is an itame carrying mokume and nagare-hada, the grain standing a little, with ji-nie attaching fine and chikei entering of an irregular changing-steel cast, sometimes coarse altered steel running thick through the surface, sometimes a jifu tone crossing it. A midare-utsuri rises, pale, the Bizen reflection of the period; on the most crowded small-pattern blades it reads instead as a straight utsuri, and the ji is carried as much by the standing itame and that kawarigane chikei as by the reflection. Through the yakiba ashi and yo enter well, the temper is nioi-prevailing with ko-nie, and kinsuji and sunagashi play finely along it. The boshi runs into the midare and points, returning to a ko-maru or burning out in a yakizume, hakikake brushing the turn. A bo-hi, on several blades carried with a soe-hi or beside the trace of a bonji, runs through the body. The sugata is the broad shape of the late Nanbokucho: a wide body with little taper from machi to point, a large kissaki, the curvature shallow, the build heavy in the hand, most often reached by o-suriage that has left the blade mumei.
The oeuvre divides on the nakago. A small group of ubu pieces keeps the original shape and the long signature with its year-date, the koshizori tachi and the broad, suriage-shortened hira-zukuri wakizashi among them, and these are the documentary anchor for everything else. The far larger part is o-suriage and mumei, attributed to him by the workmanship alone, and it is on these that the kantei argument is made and remade: a blade is read first as Kanemitsu's school, then resolved to Nariie by the smaller, more cluttered pattern, the mixture of many ha-types, and a touch of the rustic in the ji and ha. The year-dates carry their own weight in the scholarship. The records give him dates from Bunna and Koan that run relatively early for a Kozori smith, and the NBTHK marks them, treating the Koan 2 wakizashi as a good document and noting that such comparatively early signatures bear on where, within the loose Kozori grouping, his work should sit.
Within that grouping the published sources rank him high. They hold his skill equal to or above that of Masamitsu, a Kanemitsu pupil of his own generation, 「彼の技術は同年代の兼光一門の政光に比して優るとも劣らず」[[c:4]], and on one blade call him a representative smith of the Kozori group at the height of the Nanbokucho period. The comparison that frames him is therefore never a borrowing but a measure: he is placed beside Kanemitsu to be distinguished from him, his own typical traits leading the reading. His midare crowds where Kanemitsu's opens; his ji takes a changing-steel chikei and a pale utsuri where the Kanemitsu line runs cleaner; his temper gathers many small ha where theirs is more uniform. These are the features the judges name as his, and the resemblance survives in the prose only as the thing they are correcting.
The Fujishiro appraisal places Nariie at Chu-jo saku, and his designated record stands at one Important Cultural Property and twenty Juyo Token, with no National Treasure or Tokubetsu Juyo among them. The Important Cultural Property is patrimony, held outside the market as such designations are; the Juyo blades, almost all o-suriage mumei katana, are what a private collector might realistically hope to meet, and they come to hand only from time to time. Provenance is thinly recorded for his work: one katana is documented as having been carried by Imai Sadahiro, the castle elder of the Nishio domain in Mikawa, at the battle of Toba-Fushimi in the Boshin War, and descended with its red stone-grain lacquer scabbard mounting. Beyond that the owners of his blades are largely unrecorded, and what survives is best described as held in long-private hands. For a Kozori master read always against Kanemitsu, a signed and dated example is the rarer find, the o-suriage mumei katana the more usual one, and either is encountered with patience rather than at will.
Where Nariie 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.
Years he was demonstrably active, proven by signed-and-dated blades
Bizen-den · Bizen
24 pieces on the market now
The Kozori (小反り) form a loose body of Bizen smiths who worked at and around Osafune in the closing decades of the Nanbokucho period and on into early Muromachi, and the NBTHK defines them less by descent than by exclusion: they are the late-Osafune hands who fall outside the specific lineages of Kanemitsu, Chogi, Motoshige and the Omiya group, gathered under one name as a convenience. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Hidemitsu秀光 | 1375-1392 | 19 |
| Iesuke家助 | 1394-1428 | 11 |
| Iemori家守 | 1377-1406 | 15 |
| Nariie成家 | 1352-1362 | 21 |
| Moromitsu師光 | 1375-1390 | 7 |
A blade of top-grade workmanship and condition, formally judged to rank with a nationally recognized Important Art Object (Jūyō Bijutsuhin). Awarded only at the NBTHK’s competitive annual examination.
Of Japan’s roughly 2.5 million registered swords, only 12,307 (about 1 in 203) have ever attained Jūyō.
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 siteIf you wish to return an item, please notify us within 3 days of receipt. After this period we cannot accept cancellations. Please ship the return to us within 5 business days. Cancellation is conditional on the item being kept in the same condition as at the time of sale, so please handle it with care.