Watch List notes:

Abbasid / Tahirid revolution, temp. al-Ma'mun, Dirham, 2.92g, al-Muhammadiya, AH206, citing Ishaq bin Yahya, rev. dhu'l riyasatayn above and below legend (Eshragh 1189; Lowick 1979), very fine, scarce.

(£100 - £150)