Watch List notes:

ABBASID, al-Mahdi, 158-169 AH (775-785 AD). AR Dirhem (2.86 gm; 24 mm). (Abu 'Abd Allah Muhammad, b. al-Mansur), obverse, Shahadah, reverse Surat al-Ikhlas from Quran. mint Wasit, year 160. Choice Superb EF. Toned.
Estimate: 30 USD