This is a Ko-Tosyo tsuba from the Late Muromachi period. It is a round iron tsuba with no design and a hammered finish. Tosyo tsuba are generally made of steel and are often simple plate tsuba with no pattern.

Ko-tosho School
Muromachi
Unsigned
Tosho-Katchushi
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.
Returns/exchanges/cancellations not accepted after shipment except for significant defects; if defective, return/exchange possible within 3 days of arrival (return shipping paid by customer).
This is a Ko-Tosyo tsuba from the Late Muromachi period. It is a round iron tsuba with no design and a hammered finish. Tosyo tsuba are generally made of steel and are often simple plate tsuba with no pattern.

Ko-tosho School
Muromachi
Unsigned
Tosho-Katchushi
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.
Returns/exchanges/cancellations not accepted after shipment except for significant defects; if defective, return/exchange possible within 3 days of arrival (return shipping paid by customer).