Watch List notes:

ABBASID: al-Mu'tadid, 892-902, AR dirham (3.98g), Ardabil, AH282, A-242, Vardanyan-, clear mint name, 7 years earlier than the first confirmed coin struck at Ardabil (AH289, AV dinar, Sajid, Yusuf b. Diwdad, Vard-23), slight wavyness, unpublished and probably unique, Fine to VF, RRR. Vardanyan lists standard Abbasid dirhams dated AH282 for the mints of Adharbayjan & Bardha'a.

Estimate: 300-400 USD