Gold coin id

Hi does anyone know the id of this gold coin? It’s 10mm in diameter and not dished. I’m thinking Celtic quarter stater or Saxon tremises but not entirely sure. I don’t have the weight as my weighing machine isn’t working.

Thanks in advance for your help.

Hi, you can forget about Celtics or Saxons, the writing is arabic…

Hello  

A fanam but can't tell much more

 Pictures enlarged, rotated, cropped - if it helps anyone … 

Thanks very much for all for your help. Yes I’ve had it confirmed it is a fanam but no idea on details like age etc. If anyone knows more please let me know