Hi, thanks for replying.
Unfortunately it's not a pierced one, just a standard type 98.
I've only taken one bad pic of the tang myself but it has been translated by previous owner. And cross referencing a page in swords of Slough which he went through with me. Will take some pictures of the tang and add as the ones I've taken don't show much and I'm currently away.
Thankfully he's taken the time to give me some maintenance instructions. No touching, oiling once a week or so and also suggested mounting outside of says a he doesn't trust conditions inside?
When he purchased the sword the blade was covered in a hard/dried wax of some sort, which is why blade really is in immaculate condition. No scratches, rust, potting or edge damage.