Katana in Shirasaya(Tokubetsu Hozon paper)
Signature: Hizen koku ju Musashi Daijo Fujiwara Tadahiro
Kanei 7 nen 2 gatsu Kichijitsu
The blade was polished.
Blade length : 71.0 cm or 27.95 inches.
Sori : 1.1 cm or 0.43 inches.
Width at the hamachi : 3.15 cm or 1.24 inches.
Width at the Kissaki : 2.41 cm or 0.94 inches.
Kasane : 0.64 cm or 0.25 inches.
Era : Early Edo period. around Kanei era.
Shape : The blade is wide and thick healthy blade
Jitetsu :Koitame hada well grained with jinie attach and small active Chikei work.
Hamon : Niedeki Gunome midare hamon with thick Nioikuchi.
In Ha, there are nice long Kinsuji work and also Sunagashi.
Horimono(carving):There are Bonji(Sanskrit),and Su-ken(Ken) .
Special feature : Tadayoshi the First, born Hashimoto Shinzaemon was a swordsmith of Hizen province, present Saga pref. in Kyushu Island. Both his father and grandfather passed away when Tadayoshi was 13 years old so Tadayoshi learned under Dotanuki Zenbei in Higo province, present Kumamoto pref. Tadayoshi and Munenaga went to Kyoto to learn under the Umetada School in 1596. Tadayoshi learned forging sword and Munenaga learned the carving. They returned in 1598. Tadayoshi worked as a retained swordsmith of the Nabeshima family in the domain of Saga. Tadaysohi’s first sword inscribed the date was forged in 1600 at the age of 29. He changed the name to Tadahiro at the occasion of approved as the Musashi-Daijo in February 1624. Tadahiro (Tadayoshi) passed away in 1632.
His sword was ranked as a Saijyo-saku O-wazamono in the shin-to period. The Hizen School placed extremely important position in the history of this period. The main Tadayoshi family and derived branches had been developed and prospared.
Tadayoshi inscribed the signature with five characters entire sword forged around 1624 to 1628, the first year to the 4th year of Kan-ei era. Rarely his sword forged during in 1628, the 5th year of Kan-ei has a little biggish signature inscribed with medium-thick tagane.
The temperline of most Hizen-to starts slightly away from the hamachi except for some swords with the signature Hizen (No) Kuni Tadayoshi by Tadayoshi the First. The same applies to the sword with the signature Junin Tadayoshi and Musashi Daijyo Tadahiro.
Tokubetsu Hozon paper
Aoi Art estimation paper : whole Oshigata.