Steffieeee

Thanks. Any idea of date? I assume later Edo

More pics

Hi looking for help with this yari blade, I know nothing about them, so have literally no clue or age of this. Very long tang which seems typical. Overall length 47 CMS, blade 11 CMS. Visible darkened panel to each face of trianglular blade. Many thanks for any help

Thanks very much Ray.

Just took some oil off it, no patina damage, it's mainly the lighting

And a couple more for luck

Degreased and zoomed ..

Ainu swords or knives, preferably the former

Thanks for the help. I thought it was a long shot. It is covered in a lot of grease, should I take this off ?could make it more legible. Obviously without changing the patina. I assume none of the sig is cut off/missing

Maybe these help a bit

I'll try my best hard to get it sharp really as it's very worn

Hi any chance anyone can hint at this signature? Obviously been shortened and had a hard life etc

I don't really understand what any of the above comments means to be honest. Must look at my terminology book. Saiha is re-tempering, how does that relate to blade shape or curvature? Ok I have been reading about this now on the forum and understand. So I can assume the curvature is not original, the hamon is not original and there is no way of knowing what the sword is or how old at all?