Thanks Guys!
I'm a member of the Japanese Sword Italian Association, I know Japanese sword terms and I can translate signatures and nakago inscriptions, but reading current kanji is another thing.
I believed to find on Hozon paper not only the material items description, but also the school attribution or the style of mountings.
The interesting thing is that all the koshirae seems en suite, with all the fittings, tsuka and saya aged all the same.
Thanks again
Renato M