I guess I need to stop and look, I agree with Moriyama sama, (once again the eagle eye) with Norimitsu, a few more pages of Norimitsu than Sadamitsu but with the date it looks like its 6'th Gen, which is even better rated smith, I feel this is in not as bad shape as you may think (from the pix not in hand) and worthy of a restoration project, the reshaping of the nakago could have been from a mounting in a Kyu-gunto mount. A shinsa and polish may be in order for this. VNF