Watch List notes:

Iran, Islamic Dynasties, Artuqids of Mardin. Najm al-Din Alpi, 547-572 AH (1152-1176), Dirham, 547-572 AH (AD 1152-1176); AE (g 13,20; mm 32; h 7); Two diademed and draped male bust confronted, Rv. Two Byzantine Emperors standing facing. Album 1827.
Dark patina, very fine.