Watch List notes:

FATIMID: al-Mu'izz, 953-975, AR full dirham (2.49g), al-Mahdiya, AH(3)56, A-X699, Nicol, very rare denomination, struck from dies broader than those used for the half dirhams, date weak but very likely, unpublished, VF, RRRR. The only published full dirham of al-Mu'izz struck at al-Mahdiya is dated AH360 (2.58g), Nicol-A494, unique.

Estimate: 700-800 USD