A KATANA, the blade honzukuri, iorimune, torii-zori with extended chugissaki, ko-itame hada, suguha hamon, chu-maru boshi, a dragon and ken horimono on the omote, gomabashi on the ura, ubu nakago with signature Nagasone Kotetsu Niudo Okisato, Kanbun 10th year (1670), 19th century, 69.4cm., in a textured black lacquer saya with an iron kojiri, associated fuchi-kashira, the fuchi with signature Umetada saku, copper and gilt menuki of figures, large iron tsuba formed as two dragons, with signature Kojo Masaya

细节

A KATANA, the blade honzukuri, iorimune, torii-zori with extended chugissaki, ko-itame hada, suguha hamon, chu-maru boshi, a dragon and ken horimono on the omote, gomabashi on the ura, ubu nakago with signature Nagasone Kotetsu Niudo Okisato, Kanbun 10th year (1670), 19th century, 69.4cm., in a textured black lacquer saya with an iron kojiri, associated fuchi-kashira, the fuchi with signature Umetada saku, copper and gilt menuki of figures, large iron tsuba formed as two dragons, with signature Kojo Masaya