Ordering number :20107
Katana in Shirasaya with Koshirae.(NBTHK Tokubetsu Hozon Token)(consignment sale)
Signature : Hizen Kuni Ju Oumi Daijo Fujiwara Tadahiro
(We divide 4 sections for each sword as Saijyo saku, Jyo-jyo saku Jyo saku and regular saku)
Shinto : Jyojyo saku high ranking : Oowaza mono cutting test high ranking : Hizen province.
This sword belongs to Jyo joy saku ranking.
The blade was polished.
Habaki : Gold foiled single habaki.
Blade length : 69.7 cm or 27.44 inches.
Sori :1.515cm or 0.776 inches.
Mekugi : 1
Width at the hamachi : 2.91cm or 1.146 inches.
Width at the Kissaki : 1.97 cm or 0.776 inches.
Kasane : 0.66 cm or 0.26 inches.
The weight of the sword 605 grams.
Era : Edo period Kanei era.
Shape : The blade is regular width,
thickness with nice sori longer kissaki.
Jigane :Ko Itame Hada well grained with Jinie attach. The Jigane is beautiful.
Hamon :Nie Deki, middle Suguha hamon. The Habuchi is soft.
The Boshi is round shape.
Special feature: Tadahiro the Second, born Heisakuro Hashimoto as a legitimate son of Tadayoshi the First.
Tadahiro was only 19 years old when his father passed away in 1632
but he was enough skillful to make 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. He is known as a skillful swordsmith almost all works are above the standard hizen-to.
He had been made sword for a long period of time to leave the largest number
of swords in the swordsmiths of Hizen school. He was good at both of Suguha and Choji-midare Hamon.
Especially the beauty of jitetsu called konuka-hada is appreciated as the best among the hizen-to.
His swords are ranked at the Owaza-mono because of the sharpness.
Saya :black color saya.
Tsuba: On the iron plate, Matsu tree
and some sea birds are flying on the sky are engraved with gold color.
Menuki: It looks like the flower is engraved by shakudo plate.
Fuchikashira: On the iron plate, kiku flowers and a butterfly are engraved with gold color.
From Aoi Art: This sword is Ubu nakago with one hole mekugiana
which is typical Oumi Daijyo Tadahiro.
The blade is middle suguha hamon with soft feeling habuchi.
He passed away at age 80 long life as Edo period
so he left many swords during his life. probably he imitated
Rai school and Enjyu . He also vivid gunome midare hamon
which was helped by his student Masahiro or Tadakuni
and other students.
Daimyo Nabeshima clan invented this Hizen iron
and made a Hizen sword, so the production method was kept secret
so as not to leak it to others.
This secret had kept at the end of Edo period. Probably
The Japanese Tamahagane was used by Japanese Tamahagane
and mixed up with western holland steal.
This sword passed NBTHK Tokubetsu Hozon Token already.
NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper: whole Oshigata.