Thanks. I didn't read your post until after I posted the reply to Marko (which I was composing while you were posting), but what
Kiya Shigefusa usually has Kiya kanji on the face and Shigefusa kanji on the back.
I think everything is very clear. Thanks so much for the quick responses. I'll stick to the higher grit sharpening stone. I have a Naniwa 10,000 on its
Thanks, that's part of what worried me, after I started comparing the kanji to what now appears on pictures of most Shigefusa knives.
I believe that the second picture shows Kanji which are consistent with Kiya-branded Shigefusa. (However, Kiya sell other brands which have these kanji