Watch List notes:

ABBASID: al-Mahdi Muhammad, 775-785, AE fals (2.47g), al-Yamama, AH167, A-313Y, with the citing name Hajar below the reverse field, as on the silver dirhams of al-Yamama; the only Abbasid mint besides Makka that operated in what is now Saudi Arabia, pleasing F-VF, RRR. A total of 4 examples are now listed between Zeno & CoinArchives. This is the second example that shows the complete date & mint, superior to the previous example, sold in our Auction 39, Lot 235.

Estimate: 400-500 USD