Watch List notes:

Arabian Empires - Ayyubid-Seljuq - Amirs of Nishapur - Ay-Aba (AH556-567 / AD1161-1172) - AV Dinar (2.15 g.), citing Il Arslan b. Atsiz, his own name just al-Malik Ay-Aba, NM, Date off (A-1707.3 R; ZENO197679) - rare, struck off centre, VF