'ALAWI SHARIF: Muhammad III, 1757-1790, AR 10 dirhams (mithqal) (28.64g), Rabat al-Fath, AH1189, A-592, KM-41, 1st standard with ahad ahad ("one one", i.e., "God is One") followed by the date on obverse, only the mint name on reverse, squarish flan, PCGS graded AU53.
Estimate: 900-1,000 USD