There are limitless numbers of ways environmental damage can affect a coin. One should not blame these things on the mint. You ought to read my tutorial at the top of my home page. Your coin is not an error. And if it were it would not be valuable if given the condition of this coin. And if it were it would not if the coin were uncirculated. You may spend it in good health.
I've got a 2000 D South Carolina State Quarter. I've been researching what I thought was a mint error. I extensively researched what could have caused this during the minting process and found nothing. With your knowledge I assume you can help me out. I do understand this to be an error. Several years ago I delved into coin collecting but got too busy to keep with it. I know what acid exposure does to quarter so I know it isn't acid that caused this. I've also exposed coins to excessiv



