Yes should be either chemical or environmental exposure that caused this color. If you use the CCF search function with the keywords BLACK BEAUTY you will see mulitple discussions about odd toning on older nickels and potential causes.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz


























