ItemNo: 2040
Acc_no: AR0027
Ruler: Umar ibn al-Ala (771-780 AD)
Dynasty: Abbasid Caliphate
Denomination: AR hemidrachm
Mint: TAPWRSTAN (Tabaristan)
Date: 129 PYE
Weight (g): 1.81
Diameter (mm): 24
Die Axis: 6:30
References: Malek 2004, no. 80.1