Watch List notes:

IDRISID: Muhammad b. Idris, 828-836, AR dirham (1.99g), Subu, AH222, A-423, E--, very clear mint name, date sufficiently clear to be certain, unpublished date for this very rare mint, slightly crinkled, VF, RR. Reverse has 'ali above the reverse field, with letter waw, and muhammad bin idris below.

Estimate: 225-275 USD