¥0 (Tax included)
mumei · Kamakura · nagasa 69.5cm · sori 1.8cm




Wakimono · Etchu
Phase: Ko-Uda古宇多· 1310–1394
7 pieces on the market now
Ko-Uda (古宇多) names the founding stratum of the Uda school, the work that does not descend later than the Nanbokucho period and so stands before the long Muromachi continuation that the same studio names would carry. The setsumei place the origin in Yamato: around the Bunpo era at the close of Kamakura, the monk-smith Ko-nyudo Kunimitsu left Uda District in Yamato and settled at Utsu in Etchu, and from him the lineage took root. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Ko-Uda古宇多 | 1310-1360 | 51 |
| Kunifusa國房 | 1368-1375 | 17 |
| Kunimitsu國光 | 1362-1368 | 9 |
| Tomonori友則 | 1390-1394 | 4 |
| Kunitsugu國次 | 1356-1361 | 1 |
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 sitePlease notify us of your intention to return, by email or fax, no later than the day after the item's arrival. Return shipping, insurance, and refund transfer fees are the customer's responsibility.
¥0 (Tax included)
mumei · Kamakura · nagasa 69.5cm · sori 1.8cm




Wakimono · Etchu
Phase: Ko-Uda古宇多· 1310–1394
7 pieces on the market now
Ko-Uda (古宇多) names the founding stratum of the Uda school, the work that does not descend later than the Nanbokucho period and so stands before the long Muromachi continuation that the same studio names would carry. The setsumei place the origin in Yamato: around the Bunpo era at the close of Kamakura, the monk-smith Ko-nyudo Kunimitsu left Uda District in Yamato and settled at Utsu in Etchu, and from him the lineage took root. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Ko-Uda古宇多 | 1310-1360 | 51 |
| Kunifusa國房 | 1368-1375 | 17 |
| Kunimitsu國光 | 1362-1368 | 9 |
| Tomonori友則 | 1390-1394 | 4 |
| Kunitsugu國次 | 1356-1361 | 1 |
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 sitePlease notify us of your intention to return, by email or fax, no later than the day after the item's arrival. Return shipping, insurance, and refund transfer fees are the customer's responsibility.