The term Ryuko refers to two heroes of equal and rival strength. While it has been a popular subject for paintings in Japan since the Muromachi period, its origins are said to lie in the ancient Chinese I Ching. Clouds follow the dragon, and winds follow the tiger. Against a background of shakudo nanako-ji, the dragon and tiger are rendered in takabori; on the kozuka, the dragon is in kin-iroe and the tiger is in shakudo-ji, while on the kogai, the dragon is in shakudo-ji and the tiger is in kin-iroe. The uraita of the kozuka and the sao of the kogai feature a stylish kin-gin no sogetsugi.
Offered by Choshuya








Edo
Yamashiro
Unsigned
Hozon (NBTHK)
As written by the shop
Machine translation from the shop's Japanese · may contain errors ·
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 siteIf, 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.
Price on request