Watch List notes:

ABBASID REVOLUTION: 'Abd Allah b. 'Umar, governor of Sistan, 743-748, AE fals (3.34g), NM (AH128), A-D208, worn host (only Fair), but with the important countermark of a Sasanian style bust without crown, facing right, with the Arabic word ja'iz behind his head, VF on Fair, RRR, ex M.H. Mirza Collection. The only other recorded example on CoinArchives, believed unique at the time, bore the same countermark, but much weaker, on an equally Fair condition host, sold at Baldwin's Auction 71, Lot 1659.

Estimate: 200-300 USD