This is an iron tsuba by Iwamoto Ikkan, featuring a Kabutobachi (helmet bowl) design with a high relief carving and inlay. It is certified Hozon Tosogu by the NBTHK. The tsuba dates to the late Edo period, specifically 1858, and originates from Musashi province (Tokyo).





Iwamoto Ikkan
Edo
Musashi
Hozon (NBTHK)
Machibori · Musashi
2 pieces on the market now
Machibori · Edo
11 pieces on the market now
The Iwamoto school was a house of Edo machibori (町彫) metalworkers, founded in the early eighteenth century by Iwamoto Chūbei, a pupil of the Yokoya school, and continuing through eight generations of headmasters. As the NBTHK setsumei state repeatedly, "the Iwamoto line was originally of the Yokoya tradition," and the school's history turns on a succession crisis within that lineage: when the fifth-generation master Ryōkan died young, his junior fellow-disciple succeeded as sixth head of the Iwamoto house. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Konkan昆寛 | — | 51 |
| Kanri寛利 | 1670 | 3 |
| Masakatsu政克 (Masamoto | — | 0 |
| Soei宗栄 | — | 0 |
| Ikkan一寛 | — | 0 |
Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.
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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).
This is an iron tsuba by Iwamoto Ikkan, featuring a Kabutobachi (helmet bowl) design with a high relief carving and inlay. It is certified Hozon Tosogu by the NBTHK. The tsuba dates to the late Edo period, specifically 1858, and originates from Musashi province (Tokyo).





Iwamoto Ikkan
Edo
Musashi
Hozon (NBTHK)
Machibori · Musashi
2 pieces on the market now
Machibori · Edo
11 pieces on the market now
The Iwamoto school was a house of Edo machibori (町彫) metalworkers, founded in the early eighteenth century by Iwamoto Chūbei, a pupil of the Yokoya school, and continuing through eight generations of headmasters. As the NBTHK setsumei state repeatedly, "the Iwamoto line was originally of the Yokoya tradition," and the school's history turns on a succession crisis within that lineage: when the fifth-generation master Ryōkan died young, his junior fellow-disciple succeeded as sixth head of the Iwamoto house. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Konkan昆寛 | — | 51 |
| Kanri寛利 | 1670 | 3 |
| Masakatsu政克 (Masamoto | — | 0 |
| Soei宗栄 | — | 0 |
| Ikkan一寛 | — | 0 |
Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.
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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).