The quarter is concave on both sides and on the obverse side it has a thin line going all the way around and running right through the words "LIBERTY". Does anyone know if this might be an error in producion or just a sanded down quarter (that still doesn't explain the line and concaveness)?


As for the penny, it's hard to describe. I think it might be about 2-4% off. If so,I'm guessing it would be worth around $1? The first image shows the bottom of the coin as steps. The second image is so you can compare the top with the bottom.
EDIT: I forgot to mention that the back of the penny is like any other ordinary penny.


Thank you for the help and info!