All that is clear in the mei is Zen Ju Shimosaka Kanesaki. The top character Echi (?) is ground away to the point of being illegible.
There also was a smith, Chikuzen Kanesaki.
I point this out for two reasons:
1. In all examples of Echizen Kanesaki mei, he signed using either Kuni or Hachiuemonjo in his mei. The sword in question one has neither.
2. Chikuzen Kanesaki signed as this example is signed: (Chiku) zen Ju Shimosaka Kanesaki.
Attempting to determine anything further from the photos of the blade itself is pointless.
With the condition of the sword combined with the poor quality photos, all the research in the world is not going to reveal any usable results.
From the information provided, all you could possibly learn is:
1. It could be one of the two smith listed above. In my opinion there is a higher probability on the later, Chikuzen.
2. It could be gimei (forgery).
3. Someone has cleaned it improperly ruining the nakago.
4. in a couple of photos the kissaki looks odd, possibly reshaped (??)
5. Shinogi is washed out and uneven.
6. Yokote is washed completely away.
7. No visible hada or hamon.
8. Looks like buffer marks on the blade, which would explain 4, 5, 6,7.
9. Is it valuable? No.
10. Is it restorable? Maybe, however it is unlikely to be worth restoration, ie; it will cost more to restore than it will ever be worth.
11. The only exception to #10 is if it has a great, overwhelming sentimental value or you have money to burn.