Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.84g), al-Kufa, AH201, A-223.4, with unreported 2 letters mim 'ayn below reverse, unrecorded by Lowick, VF, RR. The meaning of the two letters below the reverse has not been determined - a mystery for further research.

Estimate: 300-400 USD