ARAB-BYZANTINE. Early Caliphate (636-660). Imitation of a Follis of Heraclius (610-641).
Heraclius in the middle; to left, Martina; to right, Heraclius Constantine; each standing facing, wearing chlamys and crown cruciger.
Rev: Large M between A/N/N/O and date; above, cross; below, B; in exergue is possibel ΘECP for Thessalonika, but minted in Syria.