AS15506-Katana: Hizen Koku Ju Omi Daijo Fujiwara Tadahiro

Katana in Shirasaya 　Koshirae(NBTHK Tokubetsu Hozon Token)
Signature :　Hizen Koku Ju Omi Daijo Fujiwara Tadahiro

Sayagaki: Hizen 2nd genaration Tadahiro
Omi Daijo. Blade lenght is 2 Shaku 5 Sun 3 Bu.
Written by Dr. Kanzan.

(We divide 4 sections for each sword as Saijyo saku, Jyo-jyo saku Jyo saku and regular saku)
This sword belongs to saijyo saku ranking.
The blade was polished.
Habaki:　Gold foiled single habaki.
Blade length: 76.3 cm or 30.03 inches.
Sori : 2.2 cm or 0.86 inches.
Mekugi : 3
Width at the hamachi: 3.1cm or 1.22 inches.
Width at the Kissaki: 2.2 cm or 0.86 inches.
Kasane : 0.8 cm or 0.31 inches.
The weight of the sword 875 grams.
Era: Edo period around Kanbun era.
Shape: Wide and thick Katana with deep Sori, longer Kissaki.
About 3cm Machiokuri.
Jigane: Ko Itame Hada well grained with Jinie attach.
Hamon : Ko Nie Deki, Suguha Hamon with thick Nioikuchi.
There are many Ashi and Yo.

Special feature: Omi Daijo Fujiwara Tadahiro was the son of the first generation Tadayoshi. Tadahiro was only19 years old when his father passed away in1632
but he was enough skillful to forge sword at that time.
Tadahiro designated the Omi-Daijo in 1641, aged 29
and continued not only forging sword but also supervised many pupils until his death in 1693, aged 80.
The number of swords is the largest Amon Hizen swords. Because it has been produced for a long time.
He made Suguha Hamon and also Choji Midare Hamon swords.
Both are goos works.

Koshirae :
Saya : Black Roiro Saya.
Tsuba : Round shape iron Tsuba, Japanese white radish with brass inlay.
Menuki : Ume tree and flower are engraved with gold and silver color.
Fuchikashira: Shakudo Nanako, family crest is engraved with gold color.

NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper: whole Oshigata.