@alv, first welcome to CCF. Second, I agree with @hon that it looks like this nickel has been exposed to a corrosive environment, such as acid.
"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























