Hello, was looking for an opinion on this Wakizashi, nagasa 20 11/16 inch's. Any info would be greatly appreciated. I think I have narrowed it down to the Kozori school. Signed Bishu Osafune Norimitsu which I know is indicative of Kazu-uchi mono, so can we say this Norimitsu is kazu-uchi mono? Thank you for any help.             Dwayne R