BYZANTINE COINS, Heraclius (610-641), Eagle with spread wings countermarked on Justinian I, Follis (MIB 84), Syria/Palestine, c. 629, 15.69g/7h (MIB III, pl. 15, Km 3; Qedar, Copper coinage of Syria, INJ 10, 1988-9, p.38, 3 and pl. 4, 3). Coin fine, countermark very fine, rare
£150-200

The revalidation of this issue with the use of a countermark is probably to be associated with the reconquest of Syria and Palestine in 629