Probably a token or medallion, not a monetary item. It those are Arabic characters, they aren't numbers, so there doesn't appear to be a date or a denomination.
It is an Iranian (Persian) wedding token: Here are some of these tokens: http://users.pullman.com/fjstevens/tokens/arrastokens/IranTokens.html Yours looks like the "Higher Quality Modern Type, 19mm brass".
