Tang writing on both sides


I have this blade with a slightly more corroded tang than usual, with both sides full of kanji, I would like to get some help, at least the to find out the last 2 kanji of the signature to start with my research, or with help of the other side as it does not look like a dating (perhaps a memorial writing, or the second part of the long signature?)

Peter G.

81366678_2660401160702993_2873837526278209536_n.jpg187.42 KB
80805195_2257683077872899_214275862562865152_n.jpg199.04 KB