Coins - Middle East Abbasid Empire Tabaristan Umar ibn al-'Ala Hemidrachm 773 AH 157 Album# 56; Silver 1.90 g.; Umar ibn al-'Ala (AH 154-163 = AD 771-780); Tabaristan Mint; Obv: Crowned and draped Sas
Coins - Middle East Abbasid Empire Tabaristan Umar ibn al-'Ala Hemidrachm 773 AH 157 Album# 56; Silver 1.90 g.; Umar ibn al-'Ala (AH 154-163 = AD 771-780); Tabaristan Mint; Obv: Crowned and draped Sas