Your coin is definitely from the Ptolemaic Kingdom, a Hellenistic state based in Egypt. So this would be considered Greek, and the lettering I used to identify it was in Greek. To narrow it down further, could you give the weight and diameter? It would help a lot and make it much easier to identify.
Hope this helps!
"Be kind, rewind."
Numista referee for banknotes from Greece, Crete & the Ionian Islands.