World coins
The Caliphate
Abbasid, Tabaristan, coll. Hemidrachm, Sulayman bin Musa, AH 171-173 (787-789 AD), 137 PYE (788 AD), Album 65, 1.95 g, 2.25 g, 1.84 g, 1.90 g, 1.90 g, 2.12 g; al-Mahdi, AH 158-169 (775-785 AD), Album 56, 1.82 g; Harun al-Rashid, AH 170-193 (786-809), 2.28 g; anonym, AH 160, 1.95 g. (9)