Lot 839:
The Abbasid Caliphate. Al-Mahdi (158-169 AH / 775-785 AD). AR Dirham, al-Basra mint, 160 AH. D/ Kalima in three lines; mint and date formula around. R/ citing al-Mahdi as al-Khalifa and the official Muhammad; Qur'an IX, 33 around. Album 215.1 (note 125); Lowick 1077 (for reverse). 2.87 g. 25.00 mm. Surface scratches. Good VF.