Hello everyone! The coin is 16.5mm and 1.04 grams. I cannot read the writing and it would be good to know the ruler and the mint. Thanks for the help.
I only have some Umayyad AV Dinars, no reference books on the subject. But I just ordered the Volume 1 of Islamic Coinage/ Medieval Period
Looks to me like a fourrée dinar with all the plating worn off... neat item! I would love to have one. Here’s an example with gold still on it: https://www.acsearch.info/search.html?id=1671626