Translation Sword mei

help appreciated in translation of this signature please.

Tanks Prasit

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2nd picture too dark

The second picture is too dark to read - try again.
It is a long signature that starts on one side (first picture) and ends on the other side.
The first side says "BISHUu OSAFUNE JUU NIN".
The beginning of the second part is "YOKOYAMA KOuZUKE DAIJO...".
A good guess is that the name is SUKESADA.