Arab-Byzantine, pseudo-Byzantine Fals, standing figure type, countermarked bi-ludd on reverse, 4.64g (Goodwin B1b). Host coin fine, countermark fair.
Reference: Goodwin, T., 'Countermarking in Seventh Century Syria, Part II: Countermarks from after the Arab Conquest', Supplement to ONS Newsletter 183, 2005
Estimate: £30-40