@sks, first welcome to CCF. Second, we do see laminations pretty often here. For big ones like you have with coin, it seems to be worth saving them in a 2x2 to protect the partially attached metal.
"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