Watch List notes:

ABBASID, AL-MUKTAFI (289-295h). Donative quarter-dinar, 293h. Obverse: In margin: la ilaha illa Allah Muhammad rasul Allah; In field: al-Muktafi | billah. Reverse: In margin: bismillah duriba sanat thalath wa tisa'in wa mi'atayn; In field: amir | al-mu'minin. Reference: cf Bernardi 229 (a similar quarter-dinar without mint-name, dated 291h and also naming Wali al-dawla). Weight: 0.96g. Crinkled flan, traces of mounting on edge, otherwise good very fine and of the highest rarity, apparently unpublished
(3000-4000 GBP)