What might this coin be, and possible value?

[forthillbillies]

Sorry for the lame cell phone pic. Hopefully you can still Id? It may be a while before I can get a better pic. The size is between a dime and a nickel, but thicker than a nickel. Any help is appreciated!!

 

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[grimwolf2003]

Where was it found?

 

[Edward1976]

It's Arabic writing, seen one before, was from 1400s...

 

[forthillbillies]

It was something a grandparent had. No idea where it came from.

 

[fishguy]

what size is it and do you know what type of metal it seems to be looks to be copper or bronze in photo