This is a wakizashi by Yusuishi Sadayoshi, born in Meiji 41. He studied under Gassan Sadakatsu and was granted a character from his master's name, signing as Sadayoshi. He established a forge near Mishima Taisha, famous for its abundant spring water, and also used the name 'Yusuishin'. He dedicated his life to sword making, researching Soshu Masamune, Sadamune, and Yamato Hosho Sadayoshi, and devising steel production methods using wazuku and old iron, similar to masters like Sumitani Masamine, Amada Akitsugu, and Miyairi Yukihira.
mei · Showa (1926-1989)

Shinshinto · Shizuoka · around 1926-1989
1 piece on the market now
Shinshinto · Settsu
40 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sadaharu貞晴 | 1865-1868 | 0 |
| Sadayoshi貞吉 | 1926-1989 | 0 |
| Yoshiaki吉明 | 1844-1848 | 0 |
| Naonobu直信 | 1854-1860 | 0 |
| Sadayoshi貞吉 | 1830-1863 | 0 |
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.
If, due to our fault, the item differs significantly from its proper condition, the item may be returned. Cooling-off is within one week of the item's arrival.
This is a wakizashi by Yusuishi Sadayoshi, born in Meiji 41. He studied under Gassan Sadakatsu and was granted a character from his master's name, signing as Sadayoshi. He established a forge near Mishima Taisha, famous for its abundant spring water, and also used the name 'Yusuishin'. He dedicated his life to sword making, researching Soshu Masamune, Sadamune, and Yamato Hosho Sadayoshi, and devising steel production methods using wazuku and old iron, similar to masters like Sumitani Masamine, Amada Akitsugu, and Miyairi Yukihira.
mei · Showa (1926-1989)

Shinshinto · Shizuoka · around 1926-1989
1 piece on the market now
Shinshinto · Settsu
40 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sadaharu貞晴 | 1865-1868 | 0 |
| Sadayoshi貞吉 | 1926-1989 | 0 |
| Yoshiaki吉明 | 1844-1848 | 0 |
| Naonobu直信 | 1854-1860 | 0 |
| Sadayoshi貞吉 | 1830-1863 | 0 |
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.
If, due to our fault, the item differs significantly from its proper condition, the item may be returned. Cooling-off is within one week of the item's arrival.