'Abbasid caliphs
Hârûn ar-Rashîd, 170-193 H./786-809 AD. Dirham 191 H., ar-Râfiqa, anonymous with mint mark râ' below rev. field. Lowick/Savage 636; Qatar 1611. 2.95 g.; About extremely fine
Acqu. Stephen Album, Santa Rosa, list 178 April 2002 no. 140.