Watch List notes:

TABARISTAN: 'Umar, 771-780, AR ½ dirham (2.02g), Tabaristan, PYE125, A-57, governor's name in Pahlavi before bust & in Arabic in margin, both languages citing the patronymic (ibn al-'alâ), from recent hoard, bold strike, lustsrous UNC

Estimate: 100-140 USD