Watch List notes:

ISLAMIC, 'Abbasid Governors of Tabaristan. 'Umar ibn al-'Alā. PYE 120-129/30 / AH 155-164/5 / AD 771-782. AR Hemidrachm (22.5mm, 2.15 g, 2h). Dated PYE 129 (AH 164 / AD 780/1). Crowned Sasanian-style bust right; "excellent" and "good" in 2nd and 3rd quarters of margin / Fire altar flanked by attendants; star and crescent flanking flames. Malek 80; Album 56. VF, toned.

From the J. P. Righetti Collection, 16.