ARAB-BYZANTINE: Standing Caliph, ca. 692-697, AE fals (2.61g), Harran, A-3537, unusual type, unique to this mint, nice strike on crude planchet, VF, RR. The obverse inscriptions consist of "muhammad" to the left and the mint name to the right of the caliph, whereas the reverse bears a Greek monogram to the left and repeats the name "muhammad" in Arabic to the right. The Greek IS appears below the reverse, of unexplained meaning.
Estimate: 150-200 USD