Unknown ancient/medieval gold coin

I haven't had any luck tracking this one down. Came from a collection of ancient/medieval coins I recently purchased. Looks arabic in origin, but the letters are "blocky", reminding me of crusader era coins. The closest match I've found so far are gold dinars.
It weighs 3.67 grams, 22mm diameter.

It weighs 3.67 grams, 22mm diameter.


http://stores.ebay.ca/Mattscoin - Canadian coins, World Coins, Silver, Gold, Coin lots, Modern Mint Products & Collections
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Comments
"Dynasty
The Fatimid Caliphate, 297-567 H/909-1171 AD
Ruler and dates
Abu’l-Maymun ‘Abd al-Majid al-Hafiz li-Din Allah ibn Abu’l-Qasim Muhammad ibn al-Mustansir, (526-544 H/1131-1149 AD)
Mint name
Misr – Egypt, with the mint probably located in al-Qahira (Cairo)
Date
536 H (1141-1142 AD)
Metal and denomination
Gold dinar
Weight and measurement
4.15 g / 21.5 mm"
https://www.davidmus.dk/en/col...ids-and-fatimids/coins
However, the lettering does not match and I agree the letters on your coin are more blocky.
http://www.gold-stater.com/medieval-gold-coins.html
Here's one somewhat less worn on ebay:
http://www.ebay.com/itm/Crusad...d-Bezant-/221472797107