ABBASID REVOLUTION: Anonymous, 744-751, AR dirham (2.62g), Mahayy, AH128, A-206.1, Klat--, struck by partisans of 'Abd Allah b. Mu'awiya, some minor adhesions, predominantly on the reverse, VF, RRRR. Unpublished and presumed unique. Klat listed only the year AH129 for the revolution issues of Mahayy, but did list for Mah also dated 128 (Klat-566), but not for Mahayy.
Estimate: 6,000-7,000 USD