Watch List notes:

ATABEGS OF KHUZESTAN: Husam al-Din Aydughdu, ca. 1155-1175, AV dinar (2.28g), 'Askar, AH56x, A-1921K, citing the Great Seljuq brothers Arslan b. Tughril and Muhammad b. Tughril and the caliph al-Mustadi bi-amr Allah, unpublished variety, the first discovered citing the caliph al-Mustadi rather than either of two previous caliphs al-Muqtafi or al-Mustanjid, choice VF, RRR. Cf. JONS-202 (winter 2010) for the article on these coins by Akopyan & Mosanef.

Estimate: 400-600 USD