World coins
The Caliphate
Abbasid, Tabaristan, coll. Hemidrachm, Sulayman bin Musa, AH 171-173 (787-789 AD), 137 PYE (788 AD), Album 65, 2.29 g, 1.99 g, 1.95 g; al-Mahdi, AH 158-169 (775-785 AD), Album 56, 1.90 g, 1.76 g; Harun al-Rashid, AH 170-193 (786-809), 1.91 g, 1.91 g; anonymous, 130 PYE, 1.95 g; Jarir, 135 PYE, 1.81 g. (9)