The nickel appears to be environmental damage the quarter might be slightly worth a little more than face value (silver melt value)the dime has too much lighting is too blurry for me to see anything. Welcome to Cointalk Dave
The dime (1963) and quarter (1959) are 90% silver and could be worth a couple bucks apiece. The nickel (1952) is damaged and is probably worth a nickel.
The nickel is damaged and worth face value. Looks like a lamination error on the reverse but with the environmental damage it doesn't matter. The dime and quarter are 90% silver with a total value of about but not more than $5.00.
Thanks for the info. I was hoping the nickel "damage" on the back might be from an error and increase value. Also, I read somewhere about the blackish stain being the result of a mistake in the process (sorry but I forget the details). Anyway, thank for looking.