Small silver with persian legend, help to ID

Hello experts, 

I am struggling with this one, tried help on Zeno without success, but might be something easy to those who know indian or islamic coins.

12mm

1.49g

Any comment will be greatfully appreciated!

Geison

I had spotted it on zeno, my guess, as it appears to have been mounted is that it's a jewelers really crude attempt at making it look like a coin, there may have been a string of them at one time. The script such as it is makes no sense as you can see