ISLAMIC, 'Abbasid Caliphate. temp. Al-Mahdi, AH 158-169 / AD 775-785. Dirham (Silver, 33 mm, 3.69 g, 3 h), Eastern Sistan series, citing Murad, Sistan, circa AH 150/160s = AD 770s. Crowned and draped Sasanian-style bust to right; behind head, AFZUT GDH ('may his kingship increase' in Pahlawi); before head, HWSRWD ('Khosrau' in blundered Pahlawi); in outer margin, 'Murad', 'bism Allah' ('In the name of Allah') and 'Rabbi' ('my Lord') in Kufic. Rev. Fire altar flanked by two attendants; to left, blundered date; to right, blundered mint. Album 87. Malek, Arab-Sasanian, 1134. Very rare. The flan slightly wavy and with minor scratches, otherwise, good very fine.