Thanks guys! Now? I have to find out. Obviously I can't afford to have this guy polished and papered. *sigh* I'm gonna sell all my other junk and, finally, give this thing its' due.
I owned a signed katana by "Sa." It was gimei of course but that didn't detract from the beauty of the blade. That happened a lot! People gifted swords and the more famous the signature? The better gift it made. *shrug* As far as I know? Sa never actually made a blade that long. Still. It's old and precious. Who cares who first made it? She's awesome.
There were several of those guys. But I don't think most of 'em added the "made by" kanji. Actually I didn't know anyone did that. I know there's been a lot of Tsunaie's over the centuries from what I've read. No idea on what to look for. Any place I can compare the signatures?