The blade was polished.
Blade length : 22.8 cm or 8.97 inches.
Sori : 0.1 cm or 0.03 inches.
Mekugi : 1
Width at the hamachi : 2.54 cm or 1 inches.
Kasane : 0.59 cm or 0.23 inches.
Era : Late Edo period.
Shape : Regular size Tanto.
Jitetsu : Itame Hada well grained with Jinie attach. The hada pattern is well seen.
Hamon : Nie Deki Gunome Midare. Boshi is Hakikake style.
Special feature : This blade was made using old iron of Koto period during the Edo period.
Koshirae : Black color Aikuchi Koshirae with family crest.