Watch List notes:

ARAB-SASANIAN: 'Umar b. 'Ubayd Allah, 686-691, AR drachm (4.00g), ST (Istakhr), AH68, A-21, Malek-1197 (same obverse die), one pellet before and 4 pellets after the phrase lillah al-hamd in ObQ2, pellet after the mint name on the reverse, superb bold strike, About Unc, S, ex Robert Silverman Collection.

Estimate: 180-220 USD