This is a katana attributed to Ko Mihara school from the late Kamakura period. The blade is osuriage mumei with a wide shape, large sori, and longer kissaki. The jigane is ko itame hada well grained with jinie, and the hamon is ko nie deki suguha with ko ashi and thick nioikuchi. The sword has been superbly polished, highlighting the beauty of the steel.
NihontoWatchBETA
Yamato-den · Bingo
12 pieces on the market now
Bingo province, and the town of Mihara on the Numata river within it, gives this school its name. The Mihara group arose at the close of the Kamakura period and worked on through the Nanbokucho years, and the published sources gather the work of that early phase under the collective name Ko-Mihara, reserving Sue-Mihara for the late-Muromachi continuation of the line. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Masahiro正廣 | 1362-1389 | 33 |
| Masaie正家 | 1353-1375 | 29 |
| Sukekuni助國 | 1321-1329 | 23 |
| Kaneyasu兼安 | 1352-1369 | 12 |
| Masanobu正信 | 1376-1394 | 4 |
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 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 katana attributed to Ko Mihara school from the late Kamakura period. The blade is osuriage mumei with a wide shape, large sori, and longer kissaki. The jigane is ko itame hada well grained with jinie, and the hamon is ko nie deki suguha with ko ashi and thick nioikuchi. The sword has been superbly polished, highlighting the beauty of the steel.
NihontoWatchBETAYamato-den · Bingo
12 pieces on the market now
Bingo province, and the town of Mihara on the Numata river within it, gives this school its name. The Mihara group arose at the close of the Kamakura period and worked on through the Nanbokucho years, and the published sources gather the work of that early phase under the collective name Ko-Mihara, reserving Sue-Mihara for the late-Muromachi continuation of the line. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Masahiro正廣 | 1362-1389 | 33 |
| Masaie正家 | 1353-1375 | 29 |
| Sukekuni助國 | 1321-1329 | 23 |
| Kaneyasu兼安 | 1352-1369 | 12 |
| Masanobu正信 | 1376-1394 | 4 |
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 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.
