Watch List notes:

ABBASID: Abu 'Abd Allah Muhammad Al-Mahdi (775-785), AR Dirham (2.71g), Qasr Al-Salam, AH 168. Citing Al-Mahdi as caliph, "bakh" (indicating good quality) in lower reverse field. A-215.1. Extremely fine to about uncirculated. Scarce.

Estimate: 80-100