Watch List notes:

ABBASID: al-Ma'mun, 810-833, AR dirham (2.84g), Misr, AH214, A-223.7, citing the caliph as just lil-khalifa al-ma'mun, somewhat wavy surfaces & one long flan crack, VF, RR. Very rare type used only AH214-215 at Misr.

Estimate: 200-300 USD