Rats, and I thought that verdigris devalued coins.
Interesting Ebay auction by a veteran coin dealer, a 1913 T2 Buffalo Nickel with verdigris on obv that tripled asking price or perhaps that is not verdigris but nice emerald toning. hmmm. Maybe I'm missing something.
Woulda thought not.
When a man who is honestly mistaken hears the truth, he will either quit being mistaken or cease to be honest....Abraham Lincoln
Patriotism is supporting your country all the time, and your government when it deserves it.