Such coins are known as civic (i.e. city) coins. Their design is changed frequently (annually?) as re-coinage was a hidden tax on copper money: merchants should hand in their old pieces and received new coins minus the "cost" of re-minting. The coins are often badly struck, frequently overstruck on older civic or foreign coins. Consequently, there are large gaps in our knowledge of them. Saro has an impressive reference collection.
I found a similar (I think) obverse with lion and rising sun behind on a coin of Airan dated 1255 in Mitchiner (Mitch 2179). The other side is quite different, though. A number of die makers probably travelled from one town to another and used similar designs in several towns. As the coin is relatively heavy and the writing well done, I would not be surprised if it came from a big city like Isfahan or Tehran.
Peter
