Islamic Coins. Arab-Khwarizm , al-Fadl b. Sahl (as Dhu’l-Riyasatayn), half drachm, no mint or date, bust of king r., rev. horseman r., dhu’l-r / iyasatayn in upper l. field, wt. 1.83gms. (Artuk 21 var.), weak in parts, light scratches on reverse, otherwise very fine and very rare Dhu’l-Riyasatayn (d.202h) was the vizier of the caliph al-Ma’mun. £600-800
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