Hello. I joined this forum because I do have a couple of Japanese swords one of which I purchased "in pieces". I am puzzled by the markings on the tang of the one which came to me in pieces - which do not look anything like the markings I have looked at elsewhere being much more cryptic looking and falling under none of the schemes described. Attached is an image of the tang with the markings on it and I was hoping someone might know more about them ? If I were to guess I would haphazard they be some sort of modern armoury markings not related to Japanese Katana at all - but what do I know ? Nothing.
Regards , Ostin.