Antoninianus - Postumus MONETA AVG, Cologne

Postumus founded the Gallic Empire in 260 AD after capturing and executing Silenus, the officer Gallienus had left in command of the Rhine frontier, then defeating Gallienus's own retaliatory campaign the same year. He ruled for nearly a decade without ever marching on Rome — a deliberate choice that kept the western provinces stable while the central empire hemorrhaged to usurpers on every other front. The MONETA AVG type was politically pointed: asserting control over the mint at Cologne was itself a declaration of independent financial authority over the wealthiest producing provinces.

The billon content of these antoniniani had degraded sharply from the nominal silver coinage of earlier decades, mirroring the broader third-century debasement Postumus inherited rather than initiated.