Previous answer is
Special feature: During world war time, Shigetaro Emura,
a governor of Okayama prison, reformed honest prisoners
by making them produce Japanese swords.
This allowed the prison to make many swords.
They made Japanese swords under Ichimura and also Nagamitsu.
Ichihara invited Nagamitsu as a leader of the sword making.
Nagamitsu was a member of the army sword making craftsman
and got the prize of the army sword technical fosterage prize.
At a glance, the Nagamitsu swords looks poor and not looks good
because these swords were polished by poor polisher.
If the blade will be polished by good polisher, the sword will be changed a lot.
This sword is also very active Cyoji midare hamon which looks like
Shinshinto Yokoyama school. I sometimes see such kind of nice swords
which was made by Nagamitsu.
We strongly recommend unusual long and active Nagamitsu sword for you.
Near the Hamachi, there is a ware but not so bad.
I watched many Nagamitsu until now but I think this Nagamitsu is precious because the blade is long
and also nice Cyoji midare hamon like shinshinto Yokoyama school high ranking sword technique.
Appraisal Quiz #397 (July 23rd 2016)
Who made this sword do you think ?
Hints. ※The picture will be enlarged
Blade length : 70.0 cm or 27.55 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 3(1 filled)
Width at the hamachi : 2.69 cm or 1.05 inches.
Width at the Kissaki : 1.93 cm or 0.75 inches.
Kasane : 0.59 cm or 0.23 inches.
Shape : Suriage, high Koshi-Sori Katana.
Jitetsu :The mixture of Itame hada and Mokume Hada with Jinie attach.
There are Chikei and Midare Utsuri.
Hamon : Thin Suguha base with Ko-Midare and Ko-Gunome.
There are Ashi, Yo, Kinsuji and Sunagashi.
Boshi is small round shape.
Answer will be posted at next Appraisal Quiz.
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