Watch List notes:

Abbasid, temp. al-Ma'mun (194-218h), mule Dinar, Misr 201h, citing 'Ubayd Allah b. al-Sari and Dhu'l-Riyasatayn, 3.87g (Bernardi -; Lowick -). About very fine and rare.

'Ubayd Allah b. al-Sari was governor of Egypt from 206-211h; this coin must therefore be a mule struck during that period from an old reverse die of 201h.

Estimate: £200-250