Watch List notes:

ARAB-SASANIAN: 'Ubayd Allah b. Abi Bakra, fl. 698-699, AR dirham (4.03g), SK (Sijistan), AH80, A-37, pellet after the mint initial SK, EF. The date is somewhat crudely engraved, though still legible. Many examples show a completed illegible date, but stylistically derived from the year 80. There is no evidence that 'Ubayd Allah remained in office after AH80, but it is conceivable that his supporters continued to produce drachms in his name, usually with a blundered date.

Estimate: 120-160 USD