Previous answer is
Tajima Kami Hojoji Tachibana Sadakuni
Special feature : Tajima Kami Hojyoji Tachibana Sadakuni was working at Edo as Edo Hojyoji school.
From the shape of the sword, the blade is older than Kanbun era probably Kanei era.
At Edo, many swords makers like Hojyoji school were working by Masahiro, Yoshitsugu, Masateru Kaneshige
and Kotetsu. Hojyoji Tachibana Sadakuni is very similar hamon like Kotetsu Jyuzuba hamon.
According to the old sword judges, Kotetu is very similar with Sadakuni.
I think probably he was aquatinted with each other.
This sword is very attractive Jyuzuba hamon with sunagashi and kinsuji which remind us Kotetsu.
The blade is polished by one of the best polisher which is blackish slightly blue color nice Jigane.
The sword was selected as #42 Jyuyo Token.
According to the explanation of the Jyuyo zufu.
Hojyoji school was working at Kanbun to Enpo era and produced a lot of famous sword makers.
According to the data of the Tajima Kami Hojyoji Tachibana Sadakuni, exists Manji 3rd August
so it is remarkable point which means he made sword earlier date of Kanbun era.
He was working at the same time like Hojoji Masahiro.
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Appraisal Quiz #283 (March 21th, 2014)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 69.2 cm or 27.24 inches.
Sori : 2.2 cm or 0.86 inches.
Mekugi : 1 is open, 1 is filled.
Width at the hamachi : 2.62 cm or 1.03 inches.
Wide at the Kissaki : 1.47 cm or 0.57 inches.
Kasane : 0.47 cm or 0.18 inches.
Era : Gankyo Late Kamakura period year 1321
Who do you think made this sword?
The jigane is ko-itame hada well grained with mixture of Ko-mokume hada. It is clear jigane with rough utsuri appearing. Hamon is shoji midair with some edgy parts. Ashi and yo is active in the ha.
Bo-shi is notare style. Some parts are sansaku-boshi style.
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