Kunihisa wakizashi in need of restoration.  We feel the signature is fine.  The temper line or hamon although difficult to see is all there.  This is a solid blade that has history and should be restored. It came from an older collection and has not been touched since World War II I would assume.  This antique sword was made in the 1600s-1700s or thereabouts. It comes in original mounts and this priced accordingly because of condition. However we do feel that this word will polish out fine.