I received this from an acquaintance, but I have no use for it, so I'm putting it up for sale. I don't have specialized knowledge, so I don't know the details, but it says "bespoke," so it seems to be a custom-made item. It says "Special Grade," "Tosa Saw," "Bespoke," "Katahiro," "Tokushige Kageyama." There's more writing and carving, but I can't read it well. There are scratches, dirt, and rust, so please check the images and thank you for your understanding. Thank you for looking.