Watch List notes:

IDRISID: al-Musayyib, fl. 801, AR dirham (1.38g), "al-Muhammadiya", AH185, A-422M, the relationship between al-Musayyib and the Idrisids is unknown, excellent style, EF, RRR. A similar example, same dies, sold at the Peus Auction 386, Lot 1059 (2006).

Estimate: 120-160 USD