ABBASID: al-Musta'sim, 1242-1258, AV dinar (7.35g), Madinat al-Salam, AH650, A-275, fabulous strike for this series, bold legends with no weakness, well centered, best one can find, choice EF, R. For this type, only the years 640 and 641 are common, with 642-645 moderately scarce. All later dates are at least very scarce.
Estimate: 1000-1200 USD