This is a katana by Nankai Taro Masataka, made in 1975 (Showa 50). It features a nagasa of 81.0cm with a sori of 2.8cm, and a robust kasane of 0.8cm. The blade has an itame hada and a ko-choji hamon, housed in a shirasaya.
NihontoWatchmei · 現代（昭和50年・1975年） · nagasa 81cm · sori 2.8cm
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.
This is a katana by Nankai Taro Masataka, made in 1975 (Showa 50). It features a nagasa of 81.0cm with a sori of 2.8cm, and a robust kasane of 0.8cm. The blade has an itame hada and a ko-choji hamon, housed in a shirasaya.
NihontoWatchmei · 現代（昭和50年・1975年） · nagasa 81cm · sori 2.8cm
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.