Fatimids
'Ubayd-allâh al-Mahdî billâh, 297-322 H/910-934 AD Dinar 312 H (date thantayn 'ashara wa thalathmi'a), al-Mahdîya. double circle around obv. field and two dots below rev. field, beginning of mint/date formula at 10 o'clock. Nicol 60 the illustrated BM coin from the same rev. die on which Nicol read the date as 316. 4.18 g.; Very rare Clear and very fine