40 Nummi - Heraclius Constantinopolis

These folles fall within Heraclius's radical monetary reform period, during which the standard 40-nummi piece was progressively reduced in weight and diameter from the large flans of his early reign — a direct consequence of the empire's near-total financial exhaustion fighting simultaneously against the Sassanid Persians and the Avars. By the mid-620s, Constantinople itself had been besieged, and Heraclius was famously melting church plate, borrowed from Patriarch Sergius, to fund his eastern campaigns.

The 624–628 window corresponds to Heraclius's deep Persian counteroffensive, when mint output was erratic and flan preparation suffered accordingly. Irregular striking and off-center placement are endemic to the type rather than exceptional.