Watch List notes:

Islamic Coins, Abbasid, al-Ma'mun (194-218 AH/810-833 AD), AR dirhams (3): Madinat Isfahan, 197 AH; 198 AH, citing Harthama in lower reverse field; 199 AH, rev. Dhu'l -Riyasatayn, 2.89g., 2.95g., 2.94g. (Album 223.4; Lowick 1498, 1503, 1519), the first good very fine, the others extremely fine (3)