Watch List notes:

IDRISID: Anonymous, before 847, AR dirham (2.41g), "Ifriqiya", AH179, A-426A, totally anonymous, with palm trees above & below the reverse field; style of Moroccan mints, acceptable because "Ifriqiya" just means "Africa" and could be located anywhere in North Africa west of Egypt, unpublished and presumably unique, EF, RRR.

Estimate: 200-250 USD