Potin

The Nervii occupied territory roughly corresponding to modern Hainaut and southern Belgium, and were among the tribes Julius Caesar described as the most warlike of the Belgae — a claim he may have inflated to magnify his own victory against them at the Sabis River in 57 BC, where he reported nearly complete annihilation of their fighting force. Potin coinage of this type circulated through that disruption and likely well past it, as Caesar's campaigns did not immediately extinguish local monetary production in pacified territories.

Potin — a low-tin bronze alloy cast rather than struck — was a Gaulish solution to the practical difficulty of producing coinage without sophisticated die and hammer infrastructure.