ABBASID: al-Ma'mun, 810-833, AR 1/6 dirham (0.45g), Marw, AH202, A-223K, date after bism Allah al-rahman al-rahim in obverse margin, mint name below the reverse field; third known example and by far the finest quality, bold VF, RRR. The other two known examples sold in our Auction 39, lot 175, and Auction 47, lot 142, both much more worn and both pierced and plugged.

Estimate: USD 200 - 300