Previous answer is
Hizen koku ju Musashi Daijo Fujiwara Tadahiro/Kanei 7 nen 2 gatsu Kichijitsu
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.
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Appraisal Quiz #252 (July 26th, 2013)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 27.27 cm or 10.73 inches.
Sori : 0 cm or 0 inches.
Mekugi: 1
Width at the hamachi : 2.43 cm or 0.95 inches.
Kasane : 0.86 cm or 0.33 inches.
Shape : The blade is wide and thick (0.86cm) and also healthy blade.
It looks like Yoroi-doshi. On both sides, there is Bo-hi.
Jitetsu : Koitame hada well grained with jinie attach. There is Utsuri. beautiful texture.
Hamon : Koniedeki. Ko-Gunome Midare, deep Nioi-kuchi. In Ha, there are Kinsuji works.
Hints：
At this time, we can see such kind of thick-Kasane Tanto sometimes.
There are very few blade of signature.
Boshi is kind of Hakikake style.
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