Okan

Thank you @uwe @Nobody @Bugyotsuji !!!

Thank you Piers!

Thank you

Tanobe sensei 表 内反りノ短刀姿形面精妙ナル小板目鍛ヘ二清雅ナ直刀ヲ焼キ帽子モ小丸二深ク返リ 富士形ヲ呈スルナド□作来国俊二倣ヒタル感アリテ常ノ活気溢レル作域トハ對照ノ妙ヲ示ス優品哉珍々重々 裏 飛騨守藤原氏房　刃長九寸四分弱 歳己巳暦文月 深山識　花押

Dear @Mushin, Funny to find out that you mentioned this blade - you have a good eye. It now has a sayagaki as well:

Congrats Manuel!! Very very nice!

Amazing! @Rayhan Thank you so much!!

Dear David, i’ve already found it a couple days ago, forgot to update in here. But thank you very much!

@ROKUJURO Dear Jean, Thank you. I’ve already collected most of the designs published in the old books. They also include a version with three circles or spheres and a triangle, so I was curious why they chose to use a hexagon in this case. Of course, It may just be different interpretations of the same teaching. Also, I should mention that the tsuba you shared was created by our talented Manuel Coden (a.k.a. @C0D)

Here you go:

@Iaido dude I remember seeing exact same design as "Den Yagyu". I'll share when I find it.

Thank you all for your nice comments! @Toryu2020 Excellent writing—thank you for sharing this! Sansei Sankaku, as you know, is a well-known design. But this particular example is a hexagon, yet still classified as a triangle by the NBTHK. Any thoughts on why? And there’s also a sketch of the design in an old Yagyu book, but without any explanation. Thank you

@ROKUJURO Thank you Jean! @Curran I'm working on it!

Hello all, I’d like to share the latest addition to my collection, which recently arrived. Exhibited at the NBTHK Museum in 2014 and published in the exhibition book "Kurogane no Hana."

Hi guys, Looking for a copy of this exhibition book. Please let me know if you have an extra or are willing to part with yours. Thanks.