A KATANA, the blade honzukuri, iorimune, koshi-zori with ko-gissaki, itame hada, yakinaoshi (re-tempered), midare hamon, chumaru boshi, ubu nakago with added tachi-mei signature Bizen Kuni ju... Norimune, and dated Shoji (1199-1200), 16th century, 69.1cm., in an ishimeji black lacquer saya decorated with mon, copper nanako fuchi-kashira with gilt mon, iron tsuba with gilt mon, menuki of mon

细节
A KATANA, the blade honzukuri, iorimune, koshi-zori with ko-gissaki, itame hada, yakinaoshi (re-tempered), midare hamon, chumaru boshi, ubu nakago with added tachi-mei signature Bizen Kuni ju... Norimune, and dated Shoji (1199-1200), 16th century, 69.1cm., in an ishimeji black lacquer saya decorated with mon, copper nanako fuchi-kashira with gilt mon, iron tsuba with gilt mon, menuki of mon