I'll do what I can with photography. I actually bought it in the hope that it was a Korean blade. But somone said it was something Japanese left behind in Korea after the Hideyoshi invasion. When I say that it was 'unearthed' in North Korea, I mean that literally - that it is said to have come out of the ground.
I'm not sure I can extract it from the grip to photograph the tang. I'll try. The part that I call the 'guard' in English, is modern. The only part that is old is the blade. Everything else was put on by the chap who put a grip on it for me.
S