Muromachi turned sword making into an industry: the uchigatana rose with massed infantry warfare, Osafune and Seki produced bundle swords beside custom orders, and the Ming trade carried Japanese blades abroad by the tens of thousands.
This is a katana made by Sato Kiyosa of Satsuma province, dated to February 1529. Kiyosa was a swordsmith active during the Sengoku period and is said to have studied under Bizen Osafune Kiyomitsu. The blade features an itame hada with ayasugi elements and a tight itame hamon.
mei · Bunki (1501-1504) · nagasa 67.7cm · sori 2.3cm


Wakimono · Satsuma · around 1501-1504
Tōken Taikan top 49%
1 piece on the market now
Wakimono · Satsuma
Phase: Sue-Naminohira末波平· 1393–1900
2 pieces on the market now
Within the long Satsuma lineage that ran from the kotō into the shinshintō period, Sue-Naminohira (末波平) names the later chapter that carried the Naminohira tradition forward from the close of the Nanbokuchō age through the Muromachi era and into the early Edo workshops of Satsuma and neighbouring Ōsumi. The setsumei place a roster of dated smiths here: Sadatsugu of Satsuma and Haruyuki around the Tenmon era; Shigekane of Ōsumi, signing "Sūshū jū" and said also to have forged in Satsuma, dated Tenbun 14 (1545); Atsukura, who unusually prefixed the surname Fujiwara, active through Eiroku, Genki and Tenshō; and Sadakiyo, assigned to the Satō line, one of three branches (Hashiguchi, Ishigami, Satō) into which the group divides. The later Yuki-named continuation reaches into the Shintō period with Yasunetsune, counted as the fifty-ninth generation, with works dated to Enkyō and Meiwa. Throughout, the smiths worked under the Shimazu of southern Kyushu, geographically removed from the mainland centres. The setsumei describe a recurring later manner: a forging in which the hada stands out and flows with a whitish cast, a low-tempered suguha carrying hotsure, and a nioiguchi that tends toward urumi, a moist and soft quality, so that both ji and ha can read as subdued. This is framed as transmitting the manner of the forebears, the Ko-Naminohira tradition, and as conservative in character, where the early phase is described instead by a fine hoso-suguha with yaki-otoshi at the hamachi. Several pieces here, however, depart from that base by taking up the fashions of their day.
The setsumei record works in Sue-Bizen style with koshi-biraki gunome mixed with pointed and compound elements, and Atsukura's Sue-Sōshū-leaning blade with tobiyaki approaching a partial hitatsura. Given the thin corpus, these are presented as the documented range rather than as fixed traits of the phase. For kantei, the setsumei separate this phase from Ko-Naminohira by the standing, flowing hada and whitish tone paired with the low, urumi-tending suguha, against which the brighter, saeru and strongly nie-laden examples are flagged as exceptions worth noting. The koshi-biraki gunome with togariba, the katte-sagari or higaki yasurime, and the pointed midare-komi bōshi with hakikake recur as period markers, while sakizori and funbari register Muromachi sugata. Named hands anchor the group: Shigekane and Sadakiyo near Tenmon, Atsukura through Tenshō, and Haruyuki, whose work the setsumei compare to the Bungo Hirataka-Takada school, raising a possible contemporaneous link. The later Yasunetsune line then ties Sue-Naminohira to the Satsuma Shintō idiom, with wide, slightly long proportions and imo-tsuru nie-suji. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Nobuyasu延安 | 1532-1555 | 0 |
| Tadayuki忠行 | 1573-1592 | 0 |
| Yasutsugu安次 | 1532-1555 | 0 |
| Shigesumi重純 | 1449-1452 | 0 |
| Kiyosuke清左 | 1501-1504 | 0 |
Muromachi turned sword making into an industry: the uchigatana rose with massed infantry warfare, Osafune and Seki produced bundle swords beside custom orders, and the Ming trade carried Japanese blades abroad by the tens of thousands.
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 siteReturns accepted within 7 days of arrival if item is unchanged from condition at time of sale; customer bears return shipping for personal-reason returns, company covers errors/shipping damage.
This is a katana made by Sato Kiyosa of Satsuma province, dated to February 1529. Kiyosa was a swordsmith active during the Sengoku period and is said to have studied under Bizen Osafune Kiyomitsu. The blade features an itame hada with ayasugi elements and a tight itame hamon.
mei · Bunki (1501-1504) · nagasa 67.7cm · sori 2.3cm


Wakimono · Satsuma · around 1501-1504
Tōken Taikan top 49%
1 piece on the market now
Wakimono · Satsuma
Phase: Sue-Naminohira末波平· 1393–1900
2 pieces on the market now
Within the long Satsuma lineage that ran from the kotō into the shinshintō period, Sue-Naminohira (末波平) names the later chapter that carried the Naminohira tradition forward from the close of the Nanbokuchō age through the Muromachi era and into the early Edo workshops of Satsuma and neighbouring Ōsumi. The setsumei place a roster of dated smiths here: Sadatsugu of Satsuma and Haruyuki around the Tenmon era; Shigekane of Ōsumi, signing "Sūshū jū" and said also to have forged in Satsuma, dated Tenbun 14 (1545); Atsukura, who unusually prefixed the surname Fujiwara, active through Eiroku, Genki and Tenshō; and Sadakiyo, assigned to the Satō line, one of three branches (Hashiguchi, Ishigami, Satō) into which the group divides. The later Yuki-named continuation reaches into the Shintō period with Yasunetsune, counted as the fifty-ninth generation, with works dated to Enkyō and Meiwa. Throughout, the smiths worked under the Shimazu of southern Kyushu, geographically removed from the mainland centres. The setsumei describe a recurring later manner: a forging in which the hada stands out and flows with a whitish cast, a low-tempered suguha carrying hotsure, and a nioiguchi that tends toward urumi, a moist and soft quality, so that both ji and ha can read as subdued. This is framed as transmitting the manner of the forebears, the Ko-Naminohira tradition, and as conservative in character, where the early phase is described instead by a fine hoso-suguha with yaki-otoshi at the hamachi. Several pieces here, however, depart from that base by taking up the fashions of their day.
The setsumei record works in Sue-Bizen style with koshi-biraki gunome mixed with pointed and compound elements, and Atsukura's Sue-Sōshū-leaning blade with tobiyaki approaching a partial hitatsura. Given the thin corpus, these are presented as the documented range rather than as fixed traits of the phase. For kantei, the setsumei separate this phase from Ko-Naminohira by the standing, flowing hada and whitish tone paired with the low, urumi-tending suguha, against which the brighter, saeru and strongly nie-laden examples are flagged as exceptions worth noting. The koshi-biraki gunome with togariba, the katte-sagari or higaki yasurime, and the pointed midare-komi bōshi with hakikake recur as period markers, while sakizori and funbari register Muromachi sugata. Named hands anchor the group: Shigekane and Sadakiyo near Tenmon, Atsukura through Tenshō, and Haruyuki, whose work the setsumei compare to the Bungo Hirataka-Takada school, raising a possible contemporaneous link. The later Yasunetsune line then ties Sue-Naminohira to the Satsuma Shintō idiom, with wide, slightly long proportions and imo-tsuru nie-suji. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Nobuyasu延安 | 1532-1555 | 0 |
| Tadayuki忠行 | 1573-1592 | 0 |
| Yasutsugu安次 | 1532-1555 | 0 |
| Shigesumi重純 | 1449-1452 | 0 |
| Kiyosuke清左 | 1501-1504 | 0 |
Muromachi turned sword making into an industry: the uchigatana rose with massed infantry warfare, Osafune and Seki produced bundle swords beside custom orders, and the Ming trade carried Japanese blades abroad by the tens of thousands.
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 siteReturns accepted within 7 days of arrival if item is unchanged from condition at time of sale; customer bears return shipping for personal-reason returns, company covers errors/shipping damage.