From this one image, I agree with @keith that it looks like a Hungarian Denar. If it has Mary and the Christ child on the other side, then that would help to confirm. Pls post a pic when you have a chance. Thx and welcome to CCF.
"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