ABBASID COPPER COINS BY MINTS ar-Râfiqa (the government quarter of Raqqa, Northern Syria, caliphal residence under Hârûn r-Rashîd)
al-Muhtadî billâh, 255-256 H/869-870 AD, and Abû s-Sâj Dîwdâd and Ahmad ibn al-Husayn Fals 255 H. 2.97 g. Heidemann Raqqa p. 138 no. XII Of great rarity Very fine