Okay can somebody explain to me why did I find, in my change from the PATH train from New Jersey to New York proof 1999 Susan B Anthony dollar, it is way weird to find. Proof coins normally don't pop up in circulation but I found one that's like a $10 coin but the share amount of damage it's in and as dirty and scratched up as it is it still got a lot of luster
Of course they do. They are called Impaired Proofs. Someone didn't think it was necessary to keep them any longer, so they put them into circulation.
