@bob june, neat coins! In the third image, it looks to me like your coin has bronze disease. This is a problem not only for this coin, but there is some evidence that this progressive deterioration can spread to other coins. If you search on the key words bronze disease here on CCF, you will find several good threads about how to treat this coin.
"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



























