Fatimids
'Ubayd-allâh al-Mahdî billâh, 297-322 H/910-934 AD Quarter dinar 311 H, (date: ahad 'ashara wa thalathmi'a with only one 'ain), no mint, full reverse margin, though difficult to read as typical for all quarters of this decade. Nicol -. 1.04 g.; Extremely fine