Jerusalem, follis, Heraclius, Phocas
It is argued that two types of follis struck in Jerusalem in the name of Heraclius as augustus were struck in 610/1 CE rather than in 613/4 as has traditionally been assumed. These types are clearly dated to a year 4, but this is not a regnal year, nor an indictional year, but rather a date
calculated according to a revolutionary dating system used during the last years of the revolt of the Heraclii (607–610 CE). These coin types celebrate the Heraclian seizure of Jerusalem
from forces loyal to Emperor Phocas (602–610 CE) and has nothing to do with the Persians.