Watch List notes:

ABBASID REVOLUTION: 'Abd Allah [al-Saffah], as caliph, 749-754, AE fals (1.55g), Tawwaj, AH132, A-M209, date in obverse field in words, countermarked with plain annulet, Fine to VF, RRR. Considered either revolutionary or 'Abbasid, as the name 'Abd Allah is followed by the title "amir al-mu'minin", but still retains the Qur'anic verse 42:23 standard only on the revolutionary issues at this time.

Estimate: 160-200 USD