I have obtained, rather cheaply, an "unknown coin"
The best guess I have is it's either ancient Slavic or Greek, going off of the alphabet. Cyrillic being a descendant of Greek. Some of the letters look to be purely Slavic to me, and the three letters on the one side of it look like it could be a date, but looking at Cyrillic numerals doesn't help me much (to me it looks like the number for "70" is at the beginning, which makes no sense to me)
I don't think it's Runic (there are rounded letters), the letters aren't rounded enough to be Hebrew/Arabic/Indian in my opinion, and the letters aren't Asian glyphs.
The one side appears to have a wheat stalk, while the other appears to have a structure with four columns and a star on the top. However, I could have the orientation of the coin completely wrong.
And the coin feels as though it's slightly bowed in the middle, not relatively flat like medieval and modern issues...which is why I believe it to be Ancient, or at least from the early middle ages (400's to 1000). But I may be completely wrong.
Hate to say it, but it's a modern reproduction of a Judaean coin. Not up on those issues, but my best guess is its an off-metal repro of a Shekel from either the Jewish Revolt (under Nero and Vespasian) or Bar Kochba revolt (under Hadrian). Pretty popular in tourist sites, and they frequently get mixed in with either world coins or genuine ancients, adding to the confusion.
New Sale! Inexpensive classic Greek silver, over 2,400 years old!