Tang writing on both sides

Hello,

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?)

Regards
Peter G.

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