ISLAMIC, 'Abbasid Caliphate: temp. Al-Mahdi. AH 158-169 / AD 775-785. AR Hemidrachm. Issue of Nusayr (or Sa‘d). al-Rayy mint. Dated PYE 133 = AH 168 (AD 784/5). Crowned Tabaristan-type bust right; GDH monogram and 'pzwt in Pahlavi to left; nsyl in Pahlavi to right; 'pd and nwk' in outer margin / Fire altar flanked by attendants; star and crescent flanking flames; b-al-rayy in Arabic (mint) to left; thaman wa sittin wa mi’a (date) in Arabic to right; alternating triple pellets and star-in-crescents in outer margin. (1.82gm, 25mm) Extremely Rare.