Thanks for the replies! Hoping to find out more about this blade, but do not have a lot of history on it. All I know for certain is what I was told, that my grandfather obtained this in Japan during the war.
Here is the bare blade. Tip appears to be missing which is a shame.
It is magnetic (steel?), and does appear quite old. I've only worn gloves while touching it as I read horror stories or finger print rust spots.
Tang is a nice dark color, but I do not see a signature anywhere. Got plenty of pics if you want more!
Wish it were in better shape! But it has not enjoyed bring in an attic for 15+ years!