Watch List notes:

'Abbasid Caliphate. Al-Mu'tadid. AH 279-289 / AD 892-902. AV Dinar (22.8mm, 4.24 g, 11h). Nisibin mint. Dated AH 285 (AD 898). Cf. Bernardi 211Hg (this date not recorded). Buckled flan. Near Fine. Excessively rare, apparently an unpublished date for this very rare 'Abbasid gold mint.