Glad to help @aus and welcome to CCF. Typically, coins with this sort of coloration are victims of having been buried in soil for an extended period of time. As coins with a missing clad layer most often are underwieght, including the weight of this quarter could help us to rule out that possibility. Thx.
"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