Watch List notes:

Islamic Coins, Abbasid, al-Muti, silver heavy dirham, Madinat Atakiya (sic for Antakiya) 354h, without the name of local governor, 6.17gms. (cf A 265h), weak outer legends on obv. and rev. otherwise good very fine, very rare
This unusual coin would appear to be a pure Abbasid issue. (800 - 1000 GBP)