'Abbasid caliphs
al-Mu'tazz billâh, 251-255 H./866-869 AD. Dinar 252 H., Marw, with the name of the caliph only. Bernardi 0451Ph; BMC O I 343. 4.46 g.; Very rare and missing in nearly all public collections Extremely fine
Acqu. Stephen Album, Santa Rosa, list 180, June 2002, lot 5.