Watch List notes:

Abbasid, al-Mahdi, AH 158-169 (AD 775-785). AR dirham (2.78 gm; 24 mm). Basra mint. Dated AH 160. Rev Muhammad written vertically in the field. Lowick 1027; Album 215 (see footnote 125). Choice VF. Nice original find patina. Very Rare.