Watch List notes:

Tabaristan, Abbasid Governors. 'Umar b. al-'Ala. 771-780. AR hemidrachm (22 mm, 1.97 g, 9 h). Sixth series with name in Arabic. PYE 128 (A.H. 163). Crowned Sasanian style bust right / Fire altar flanked by attendants; star and crescent flanking flames. Malek 79; Album 56. Choice extremely fine.