Potin with Bull and Lily Class Ia

The Leuci occupied territory centered on the Toul basin in northeastern Gaul, and their coinage circulated during the decades that saw Caesar's campaigns transform the region permanently. Potin — a cast tin-lead-copper alloy rather than struck metal — was the dominant small-denomination medium across much of Belgic and eastern Gaul precisely because it required no die-cutting infrastructure, only molds.

Class Ia is the earliest and most coherent typological group within this series, distinguished from later classes by flan regularity and alloy consistency, before successive recasting degraded both. The casting seams are often visible on surviving examples.