Awataguchi.
Well, I tell you a little story. At the last DTI you could see two tanto. Both signed Kuniyoshi. One with Juyo and 12 Mio. Yen, the other TokuJu and 25 Mio. Yen. The second one you can find in the catalogue on page 49. The quality was amazing and in my eyes it was the best sword at the DTI. But this is just a single opinion and should not be taken too serious.
And now you can put the sword into perspective. A signed tanto with Juyo = 12 Mio. Yen compared to an unsigned tachi with a flaw = 6 Mio. Yen.
Between Juyo and Tokubetso Juyo were lightyears in quality.
What do you get, when you make a kantei from the NBTHK? An oshigata, the measurements and a blade description. Here you get some measurements, the blade is famous and a picture from a book page. This kantei was useless right from the start.
I made some kantei in the past. Kantei by photo. A different way and somehow it worked out because I wanted people to learn something. I can´t see anything like that here.
Kantei is puzzle. And nothing more. It should teach you something even if the teacher is not very likeable. The lower half reminded me of Ko Osafune the upper half of Yamashiro. And then you start to search.
Luckily I have a digital library. Token Bijutsu 493.
Sorry, wrong picture. This ist the Rai Kunimitsu tachi - Kokuho. Signed. flawless, two holes, ubu.
And by the way: if you want a flawless Rai, then the blade is either tokubetso juyo, bunkazai or above when signed. Unsigned: juyo or bijutsuhin.