Previous answer is
Mumei(Chiyozuru Morihiro)
Special feature : The swordsmith school name Chiyozuru
was derived from the childhood name of Kuniyasu who is thought
as a descendent of Rai school who moved to Echizen province in 1314
and founded Echizen-Rai School in the neighborhood of present Takeo City
or Tsuruga City in Fukui pref. The first Morihiro is thought as
a son of Rai Kuniyasu. Morihiro clan continued four generations.
The name Chiyo-zuru is a set of Japanese Kanji that means
a thousand generations and a crane by word for word translation.
It is thougth as an auspicious term from ancient times
and the sword by Chiyozuru school has been used as a gift of a matter for congratulation.
From the shape and work, this blade was made around Nanbokucho period.
This Sayagaki says “Rai” and “Rai Kuninaga”. It was also called Echizen Rai.
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Appraisal Quiz #505 (September 22nd, 2018)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 71.2 cm or 28.03 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 1
Width at the hamachi : 2.92 cm or 1.14 inches.
Width at the Kissaki : 1.78 cm or 0.70 inches.
Kasane : 0.63 cm or 0.24 inches.
Shape : Ragular size Osuriage Mumei Katana. The shape is elegant.
Jitetsu : Ko-Itame Hada well grained with Jinie attach.
The Jigane looks like Aoe and elegant. There are Utsuri on the Ji.
Hamon : Nie Deki, Suguha, Double Ha and Kuichigai Ha with Nioikuchi.
Boshi is round shape.
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