Watch List notes:

Fatimids. al-Mahdi billah. AH 297-322 / AD 910-934. AV Fractional Dinar (12.6mm, 1.01 g, 8h). Without mint-name. Dated AH 31[...] (probably AH 316) (AD 928/9). Nicol 98. Pierced. Near VF. The calligraphy on this coin is somewhat stylised and the date is difficult to read, but AH 316 seems probable.