Watch List notes:

ISLAMIC, 'Abbasid Caliphate. Al-Mu'tamid, AH 256-279 / AD 870-892. Dinar (Gold, 20 mm, 2.93 g, 1 h), Reduced weight. Citing the caliph al-Mu'tamid billah, the caliph's brother al-Muwaffaq billah and the minister Sa'id ibn Makhlad as Dhu'l Riyasatayn (holder of the two ministries), San'a, AH 271 = AD 884/5. Bernardi 178El. Rare and very attractive. Minor mark on the reverse, otherwise, extremely fine.