Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. al-Mahdi. AH 158-169 / AD 775-785. AR Hemidrachm (24mm, 1.93 g, 1h). Issue of Umar ibn al-'Ala, governor (AH 154-163 / AD 771-780). Third Series. Tabaristan mint. Dated PYE 122 = AH 157 (AD 773/4). Stylized crowned Sassanian style bust right; 'm in Arabic to right; 'pd and 'lwn in Pahlavi in outer margin / Fire altar flanked by attendants; pellets flanking flames; alternating triple pellets and star-in-crescents in outer margin. Malek 66.1-15; Album 56; ICV 104. Lightly toned. EF.