Watch List notes:

Arab-Byzantine, a Byzantine Follis of Constans II, countermarked with unidentified symbol on obverse, 5.92g (Goodwin A2). Host coin and countermark fine, scarce.

Reference: Goodwin, T., 'Countermarking in Seventh Century Syria, Part II: Countermarks from after the Arab Conquest', Supplement to ONS Newsletter 183, 2005

Estimate: £40-50