Answer previous answer was Hizen no kuni ju Omi Daijo Fujiwara Tadahiro
(Shinto Jo-josaku. Owazamono. Hizen province)

 

Special feature : Tadahiro (real name was Heisakuro Hashimoto) born as a legitimate son of Tadayoshi the First.
Tadahiro was only 29 years old, when his father passed away in1632 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 blades.
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 blades.
His swords are ranked at the Owazamono because of the sharpness.

 

 

 

 

Hint:

Blade length : 70.0 cm or 27.55 inches.
Sori : 1.5 cm or 0.59 inches.
Mekugi: 1
Width at the hamachi : 2.91 cm or 1.14 inches.
Width at the Kissaki : 1.64 cm or 0.64 inches.
Kasane : 0.69 cm or 0.27 inches.
Shape : Regular sized Katana with regular Sori.
Jitetsu : Very tight Ko-itame, and covered in Jinie.
There are rough skin parts on Shinogi-ji and around the Habaki of Sashi-ura.
Hamon : Nie based Gunome midare. There are soft Ashi in Ha.