Watch List notes:

ABBASID: al-Musta'sim, 1242-1258, AR 1/3 dirham (0.77g), Madinat al-Salam, A-277A, clear mint name, first 2 letters of khams and the last 4 letters of arba'in are clear, thus confirming the date as AH645, some weakness & porosity, Fine, RRR. First known example of type with mint & date, almost certainly unique.

Estimate: 150-200 USD