Katana in Shirasaya (20th NBTHK Juyo Paper)
Signature : Houki Kami Taira Ason Masayuki
Bunka 3nen Tora 2 gates 73 sai zo(February 1806, age of 73)
The blade was polished.
Blade length : 71.5 cm or 28.14 inches.
Sori : 1.53 cm or 0.60 inches.
Mekugi : 1
Width at the hamachi : 3.18 cm or 1.25 inches.
Width at the Kissaki : 2.17 cm or 0.85 inches.
Kasane : 0.77 cm or 0.30 inches.
Era : Late Edo period.
Shape : Wide and thick blade with Sori. Kissaki is long.
Jitetsu : Ko-Itame Hada and Masame mix with Jinie attach.
There are Chikei. This is blackish Jigane.
Hamon : Nie deki, Gunome Midare with deep Nioikuchi.
There are Ko-Ashi, Sunagashi, Kinsuji.
Special feature : Hoki no kami Taira Ason Masayuki and Motohira both twin jewels in Satsuma province.
He learned the technique of sword making from his father Masayoshi
and beyond his skill and made many attractive swords. From Kyoho 18 until Bunsei 2nd,
he lived 87 years of ages achieved his long life.
The blade looks Soshu Shizu school which has a lot of activities sunagashi and kinsuji.
The Hamon both closely resemble typical Motohira’s work.
20th NBTHK Juyo Paper
Aoi Art estimation paper : whole Oshigata.