World coins
The Caliphate
Islamic, Abbaside Caliphate, Dirhems from three different rulers.
Al-Mansur, AH 136-158 (754-775), mint al-Kufat, AH 144, 2.81 g;
Al-Mahdi, 158-169 AH (775-785), mint MAS, 162 AH, 2.72 g;
Harun al-Rashid, 170-193 AH (768-809), mint al-Mohammadiya, 190 AH, 2.61 g. (3)