Totally fine. The sword looks good enough to be placed on the wall to decorate my other fencing gear and medals.
The blade is balanced well enough that it feels like a good parry 2 with the repost in the oponents shoulder is very easy to execute and that's also nice.
I will polish it with conventional buffer and tell everyone it's a 16th century treasure!
I use to be involved in restoring antique furniture from mid 18 and 19 century and have learned very quickly about insane number of fakes, marriages and later "inspired" pieces. Of course antique dealers were and are a big part of the game. I've assumed the same would be taking place with Japanese swords and I would never spend any considerable amount of money unless quite a bit of time spend reading on the subject or undergoing apprenticeship in a restoration studio, involved with the subject.
Thanks all for your input!
Best regards, Roman.