This is a katana attributed to the Rai Kuniyuki school, dating to the mid-Kamakura period. The blade features a straight temper line with small choji and gunome, and the hada is a mix of ko-itame and nagare. It comes with a special Hozon certificate and has inscriptions by Hon'ami Ringa and Tanzan.
mumei · Koto · nagasa 62.8cm · sori 2.2cm




Yamashiro-den · Yamashiro
47 pieces on the market now
A calm, lustrous steel is the first thing the connoisseur's eye is meant to settle on with the Rai school: a finely forged ko-itame (小板目) worked until it is dense and refined, over which the ji-nie lies thickly in minute particles, fine chikei (地景) enter, and a nie-utsuri rises in the ji. This bright, refined jihada, the surface the trade reads as Rai-hada when its softer, looser patches intrude, is the constant beneath every manner the house produced. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Kuniyuki國行 | 1259-1260 | 125 |
| Kunitoshi國俊 | 1278-1288 | 79 |
| Kunitsugu國次 | 1311-1327 | 65 |
| Kunimitsu國光 | 1326-1351 | 259 |
| Kunitoshi國俊 | 1288-1319 | 196 |
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 siteFor one-of-a-kind items such as swords, sword fittings, and antiques, please contact us about a return within 3 days of the item's arrival and ship it back within 8 days. Refunds are issued the same day the returned item arrives.
This is a katana attributed to the Rai Kuniyuki school, dating to the mid-Kamakura period. The blade features a straight temper line with small choji and gunome, and the hada is a mix of ko-itame and nagare. It comes with a special Hozon certificate and has inscriptions by Hon'ami Ringa and Tanzan.
mumei · Koto · nagasa 62.8cm · sori 2.2cm




Yamashiro-den · Yamashiro
47 pieces on the market now
A calm, lustrous steel is the first thing the connoisseur's eye is meant to settle on with the Rai school: a finely forged ko-itame (小板目) worked until it is dense and refined, over which the ji-nie lies thickly in minute particles, fine chikei (地景) enter, and a nie-utsuri rises in the ji. This bright, refined jihada, the surface the trade reads as Rai-hada when its softer, looser patches intrude, is the constant beneath every manner the house produced. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Kuniyuki國行 | 1259-1260 | 125 |
| Kunitoshi國俊 | 1278-1288 | 79 |
| Kunitsugu國次 | 1311-1327 | 65 |
| Kunimitsu國光 | 1326-1351 | 259 |
| Kunitoshi國俊 | 1288-1319 | 196 |
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 siteFor one-of-a-kind items such as swords, sword fittings, and antiques, please contact us about a return within 3 days of the item's arrival and ship it back within 8 days. Refunds are issued the same day the returned item arrives.