World coins
The Caliphate
Abbaside, coll. Dirhem, four diff. rulers.
Al-Mansur, AH 136-158 (754-775), mint Al-Salam, 158 AH, 2.93 g;
Al-Mahdi, 158-169 AH (775-785), 2.67 g; 161 AH, 2.93 g;
Harun al-Rashid, 170-193 AH (768-809), 179 AH, 2,93; mint Al-Salam, 190 AH, 2,88 g; mint Amden?, 2.93 g; mint Balkh, AH 184, 3.00 g; mint Balkh, AH 188, 2.79 g;
Al-Amin Mohammed, 193-198 AH (809-813), mint Al-Salam, 193 AH 2.95 g. (9)