The blade was polished.
Blade length : 18.0 cm or 7.08 inches.
Sori : 0 cm or 0 inches.
Width at the hamachi : 1.99 cm or 0.78 inches.
Kasane : 0.39 cm or 0.15 inches.
Era : Late Edo period.
Shape : The Tanto is small size like Yomeiri tanto.
Jitetsu :Itame hada hadatachi jigane with jinie attach.
Hamon : Konie deck suguha hamon and round shape boshi.
Special feature : The blade looks old like Muromachi period but I think
some wordsmith made a Tanto a copy of old sword at late Edo period.
Saya : blue shell tiny saya with family crest gold color.
Menuki : Ratts are engraved by syakudo plate.