Abbasid, al-Ma'mun (194-218 AH 810-833 AD), Dinars (2), 4.05g., Misr 210 'Ubaydallah bin al-Sari, li'l-Khalifa/-/al-Ma'mun and 4.15g., no mint 211, li'l-Khalifa/-/al-Ma'mun, the first fine, the second very fine (2)