This is a katana attributed to the Sue-Sa school from the Nanbokucho period, specifically around the Oan era. Originally a long and wide o-dachi, it has been greatly shortened (o-suriage) and is now unsigned (mumei). The blade features a well-forged itame hada and a gunome midare hamon based on notare, with a distinctive 'Sa no sabaki-gashira' boshi.

Soshu-den · Chikuzen
12 pieces on the market now
In Chikuzen Province, on the northern coast of Kyushu, the Sa school (左, the Samonji line) took shape in the early Nanbokucho period as a deliberate break with the Kyushu work that came before it. Its founder, the smith who cut the single character 左 on his tang, is read in the published sources as Saemon Saburo, commonly called O-Sa or Samonji; he is placed as the grandson of Sairen and son of Jitsua, the old Chikuzen line whose steel, in the words the NBTHK restates blade after blade, ran sunken and rustic in a restrained suguha inherited from Yamato. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Sa左 | 1334-1338 | 74 |
| Yasuyoshi安吉 | 1346-1370 | 46 |
| Yoshisada吉貞 | 1345-1359 | 48 |
| Kunihiro國弘 | 1346-1370 | 51 |
| Hiroyasu弘安 | 1346-1370 | 24 |
We could not find an authenticity certificate on the seller’s listing. Japanese swords and fittings are normally papered by the NBTHK (or the NTHK). Without one, the attribution is the seller’s own assessment and has not been independently verified — treat it with caution and ask the dealer about certification before buying.
If, due to our fault, the item differs significantly from its proper condition, the item may be returned. Cooling-off is within one week of the item's arrival.
This is a katana attributed to the Sue-Sa school from the Nanbokucho period, specifically around the Oan era. Originally a long and wide o-dachi, it has been greatly shortened (o-suriage) and is now unsigned (mumei). The blade features a well-forged itame hada and a gunome midare hamon based on notare, with a distinctive 'Sa no sabaki-gashira' boshi.

Soshu-den · Chikuzen
12 pieces on the market now
In Chikuzen Province, on the northern coast of Kyushu, the Sa school (左, the Samonji line) took shape in the early Nanbokucho period as a deliberate break with the Kyushu work that came before it. Its founder, the smith who cut the single character 左 on his tang, is read in the published sources as Saemon Saburo, commonly called O-Sa or Samonji; he is placed as the grandson of Sairen and son of Jitsua, the old Chikuzen line whose steel, in the words the NBTHK restates blade after blade, ran sunken and rustic in a restrained suguha inherited from Yamato. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Sa左 | 1334-1338 | 74 |
| Yasuyoshi安吉 | 1346-1370 | 46 |
| Yoshisada吉貞 | 1345-1359 | 48 |
| Kunihiro國弘 | 1346-1370 | 51 |
| Hiroyasu弘安 | 1346-1370 | 24 |
We could not find an authenticity certificate on the seller’s listing. Japanese swords and fittings are normally papered by the NBTHK (or the NTHK). Without one, the attribution is the seller’s own assessment and has not been independently verified — treat it with caution and ask the dealer about certification before buying.
If, due to our fault, the item differs significantly from its proper condition, the item may be returned. Cooling-off is within one week of the item's arrival.