Impossible to see anything in that photo, but fingerprints on a coin are generally a bad thing indicating it has been mishandled.
That is definitely not a proof. There is really nothing about it that looks like a proof.
Is it the color that makes you think it is struck on a silver composition planchet? If so it is only toned, it is very common to see nickels...
Just damage on the 4. Worth a little over a dollar for the silver value.
Welcome to the forum, but unfortunately your coin is just damaged. Worth a cent if anyone will still accept it in this condition!
Welcome to the forum, and of course you can continue to post and ask questions.
Back to the coin, it is still just damaged. There is no way at the mint that words could be struck backwards. The coin has had a rough life and...
Nothing but a badly misused damaged quarter, no errors that I can see.
Looks like a normal nickel with a bit of damage.
Separate names with a comma.