This is a katana attributed to Rai Kunitsugu from the late Kamakura period. The blade features a strong itame hada and a hamon with ko-midare, ko-gunome, and ko-choji. It comes with NBTHK Tokubetsu Hozon Token certification and is mounted in shirasaya.
mumei · Rai · Kamakura · nagasa 71.2cm · sori 1.3cm






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 sitePlease contact us by phone within 3 days of the item's arrival and ship it back the next day. The postage and security service fees are the customer's responsibility.
This is a katana attributed to Rai Kunitsugu from the late Kamakura period. The blade features a strong itame hada and a hamon with ko-midare, ko-gunome, and ko-choji. It comes with NBTHK Tokubetsu Hozon Token certification and is mounted in shirasaya.
mumei · Rai · Kamakura · nagasa 71.2cm · sori 1.3cm






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 sitePlease contact us by phone within 3 days of the item's arrival and ship it back the next day. The postage and security service fees are the customer's responsibility.