This is a mumei katana attributed to Iesuke, a representative smith of Oei Bizen from the Muromachi period. It features a well-balanced shape with a high sori and a slightly thick kasane. The jigane shows itame-hada mixed with nagare-hada and a faint utsuri, while the hamon is a mix of ko-notare and gunome with active hataraki.
mumei · Oei Bizen · Muromachi · nagasa 69.2cm · sori 2.1cm




Bizen-den · Bizen
17 pieces on the market now
The Oei-Bizen and Eikyo-Bizen smiths represent the resurgence of the Osafune school in Bizen Province during the early Muromachi period, an era in which a conscious revival of Kamakura-period aesthetics transformed the character of Bizen swordmaking after the bold, expansive forms of the Nanbokucho period. The school's foremost representatives are Yasumitsu and Morimitsu, described by the NBTHK as the "twin pillars" of Oei-Bizen, both active around the Oei era (1394--1428). Learn more →
| Smith | Era | Designated |
|---|---|---|
| Yasumitsu康光 | 1394-1428 | 49 |
| Morimitsu盛光 | 1394-1428 | 60 |
| Yasumitsu康光 | 1424-1443 | 6 |
| Sanemitsu實光 | 1394-1428 | 4 |
| Koremitsu是光 | 1394-1428 | 1 |
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 you judge that the condition of the delivered item differs significantly from the photos or description on our site, a return is possible. However, the return shipping cost is the customer's responsibility. To use cooling-off, please apply in writing by postal mail within one week of the item's arrival. The return shipping cost is the customer's responsibility.
This is a mumei katana attributed to Iesuke, a representative smith of Oei Bizen from the Muromachi period. It features a well-balanced shape with a high sori and a slightly thick kasane. The jigane shows itame-hada mixed with nagare-hada and a faint utsuri, while the hamon is a mix of ko-notare and gunome with active hataraki.
mumei · Oei Bizen · Muromachi · nagasa 69.2cm · sori 2.1cm




Bizen-den · Bizen
17 pieces on the market now
The Oei-Bizen and Eikyo-Bizen smiths represent the resurgence of the Osafune school in Bizen Province during the early Muromachi period, an era in which a conscious revival of Kamakura-period aesthetics transformed the character of Bizen swordmaking after the bold, expansive forms of the Nanbokucho period. The school's foremost representatives are Yasumitsu and Morimitsu, described by the NBTHK as the "twin pillars" of Oei-Bizen, both active around the Oei era (1394--1428). Learn more →
| Smith | Era | Designated |
|---|---|---|
| Yasumitsu康光 | 1394-1428 | 49 |
| Morimitsu盛光 | 1394-1428 | 60 |
| Yasumitsu康光 | 1424-1443 | 6 |
| Sanemitsu實光 | 1394-1428 | 4 |
| Koremitsu是光 | 1394-1428 | 1 |
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 you judge that the condition of the delivered item differs significantly from the photos or description on our site, a return is possible. However, the return shipping cost is the customer's responsibility. To use cooling-off, please apply in writing by postal mail within one week of the item's arrival. The return shipping cost is the customer's responsibility.