Watch List notes:

ISLAMIC, 'Abbasid Caliphate. al-Mu'tamid. AH 256-279 / AD 870-892. AV Dinar (20mm, 2.88 g, 6h). Reduced weight. Sana'a mint. Dated AH 259 (AD 872/3). AGC I 172El; Album 1055; ICV 416. Lightly toned, numerous marks, evidence of having been placed in a bezel. VF. Rare.