Another interesting sword at the Nihontocraft website.
Kotani Takenori (Yasunori)
Yasukuni Shrine Tosho
Special Order at the request of Vice Admiral Jinichi Kusaka, Commander of the 11th Air Fleet and Commander of the Southeast Area Fleet. October, 1942
https://nihontocraft.com/Takenori_Yasunori_Tachi.html
I absolutely meant Choji midare. Sorry, typing too fast on my phone.
Like I said earlier I believe the sword is in a war time polish that doesn’t help distinguishing the features of the sword.
Thanks @Brian. I spoke to Roger many years ago about the signature on the sword. He was under the impression that it was a possible dai-mei by the 5th gen for the 4th gen Tadayoshi.
In my opinion the hada on this sword is tighter grained or finer than the sword you posted. It looks similar in my opinion to a really tight ko-mokume.
Hard to capture in a picture due to an older state of polish but could this be konuka hada? The sword in question is signed Hizen Kuni Omi Daijo Fujiwara Tadayoshi which would be the 4th generation Tadayoshi. I have reservations on the signature being correct but the sword seems to be well made.
While inspecting the sword further I found the sword registration folded up inside another piece of paper under the snaps of the leather field cover on the saya.