The coin of Iran illustrated below has resisted full attribution. All comments welcome. 18mm 2.16 grams Silver OBVERSE DOUBLED INSCRIPTION MINT OBVERSE DOUBLED IMAGE AND DENOMINATION
https://en.numista.com/catalogue/pieces57372.html Numista refers to a variety without a date. That would mean your coin would've been minted between 1896 and 1904. The correct attribution for this coin is KM# 969.
I don't know much about these coins but right under the lion there's a 3. Often in Arabic coins the main date is the year the ruler took power and there's another number like this which indicates the year of the reign. You might want to look into that.
