Watch List notes:

Abbasid, first period, temp. al-Amin (193-198h), dirham, al-Rashidiya, 193h, rev. rabi' Allah, wt. 2.97gms. (Lowick -), good very fine, extremely rare
This dirham from the previously unrecorded Abbasid mint of al-Rashidiya was struck in the Egyptian port town of Rosetta, the site of the famous Rosetta stone, which was the key to deciphering the ancient Egyptian writing system. This mint is known from a unique Umayyad copper fals.
(2000-2500 GBP)