Watch List notes:

RASSID: al-Mahdi li-din Allah, 1010-1013, AR sudaysi (0.45g), San'a, ND, A-1069R, cf. Zeno-212658, disguished from the sudaysi in the name of the Fatimid al-Mahdi by the name and mint, al-mahdi billah for the fatimid, al-mahdi li-din Allah for this ruler, extremely rare, only 3 pieces known to Vladimir Suchy, minor adhesions near the rim, EF to AU, RRR.

Estimate: 100-160 USD