This is a Juyo Token katana from the Ko-Aoe school, dating to the early Kamakura era (late 1100s to early 1200s). It is o-suriage and has lost its original signature, which is common for blades of this length from this time period. The blade exhibits the characteristics of Ko-Aoe workmanship.
NihontoWatchsuriage-mumei · Bitchû Aoe · Kamakura · nagasa 72.7cm · sori 2.7cm
Bizen-den · Bitchu
3 pieces on the market now
The Ko-Aoe school flourished in the lower basin of the Takahashi River in Bitchu Province, forging swords at the districts of Koi and Manju in a region long renowned as a source of iron. The school is traditionally held to have begun with Yasutsugu around the Joan era (1171-1175), and works produced from the end of the Heian period through approximately the mid-Kamakura period are distinguished as Ko-Aoe, with production continuing under the broader Aoe designation through the late Nanbokucho era. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Masatsune正恒 | 1213-1219 | 28 |
| Yasutsugu康次 | 1211-1213 | 11 |
| Kanetsugu包次 | 1211-1213 | 9 |
| Tsunetsugu恒次 | 1207-1211 | 12 |
| Suketsugu助次 | 1261-1264 | 14 |
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.
Three-day inspection period and seven-day return period; buyer notifies by email within three days of receipt, no reason needed; full refund once item returned undamaged and unaltered.
This is a Juyo Token katana from the Ko-Aoe school, dating to the early Kamakura era (late 1100s to early 1200s). It is o-suriage and has lost its original signature, which is common for blades of this length from this time period. The blade exhibits the characteristics of Ko-Aoe workmanship.
NihontoWatchsuriage-mumei · Bitchû Aoe · Kamakura · nagasa 72.7cm · sori 2.7cm
Bizen-den · Bitchu
3 pieces on the market now
The Ko-Aoe school flourished in the lower basin of the Takahashi River in Bitchu Province, forging swords at the districts of Koi and Manju in a region long renowned as a source of iron. The school is traditionally held to have begun with Yasutsugu around the Joan era (1171-1175), and works produced from the end of the Heian period through approximately the mid-Kamakura period are distinguished as Ko-Aoe, with production continuing under the broader Aoe designation through the late Nanbokucho era. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Masatsune正恒 | 1213-1219 | 28 |
| Yasutsugu康次 | 1211-1213 | 11 |
| Kanetsugu包次 | 1211-1213 | 9 |
| Tsunetsugu恒次 | 1207-1211 | 12 |
| Suketsugu助次 | 1261-1264 | 14 |
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.
Three-day inspection period and seven-day return period; buyer notifies by email within three days of receipt, no reason needed; full refund once item returned undamaged and unaltered.
