ABBASID: al-Mu'tazz, 866-869, AR dirham (3.30g), Fars, AH254, A-236.2, with the letter "S" below the obverse field, with 3 dots above, thus actually the letter "Sh", and like the initial of the city of Shiraz, one of the two major towns in Fars province during the Abbasid period (the other is Istakhr), VF, RR.
Estimate: 90-120 USD