Watch List notes:

RASULID: al-Mansur 'Umar I, 1229-1249, AR dirham (2.01g), Mabyan, AH636, A-1100.3, type C (diamond with excurvate sides), mint & date fully legible, virtually no weakness, very rare mint, especially for silver (better known for copper fulus), EF to About Unc, RRR.

Estimate: 200-300 USD