Watch List notes:

ISLAMIC, 'Abbasid Caliphate. temp. Al-Ma'mun, AH 193-218 / AD 809-833. Fals (Bronze, 20 mm, 2.00 g, 6 h), without mint, AH 202 = AD 817/8. Album 338Q. Rare. Patina stripped, otherwise, good very fine.