Back again. And I hope you missed me.
So, here is another kantei: Katana, osuriage - mumei - nagasa appr. 69 cm
You can find the photos here: https://www.nihontop...-von-tamahagane.
First click on the photos. In the left upper corner ther are two arrows. Use them to enlarge the photos. Have fun and I will give the answer
A small hint: No, the blade is not in the blue book.