Watch List notes:

ABBASID: al-Mu'tadid, 892-902, AV dinar (4.10g), al-Muhammadiya, AH280, A-241, Bernardi-211Mh, very rare mint in gold for al-Mu'tadid, unpublished by Miles, with no example on either Zeno or CoinArchives, slightly uneven surfaces, F-VF, RR. Bernardi lists AH281-283 for al-Muhammadiya, all unknown to Miles, but does not include 280, so possibly unique.

Estimate: 600-750 USD