Watch List notes:

Abbasids, Al-Mahdi. Æ Follis (2.76 gm; 17 mm). obverse; Moslem Shahadah(t) / Reverse; Khalif Al-Mahdi amir al Mo'menin (Mahdi commander of ther faithful) with Mohamad Rasoul allah (Mohamad is messenger of Allah), mint: Sabu(r)? date obliterated. Brown patina. Choice aEF.