Antoninianus - Tetricus I PAX AVG

Tetricus I ruled the Gallic Empire from 271 until its collapse in 274, when he surrendered to Aurelian at the Battle of Châlons rather than fight to the last. The PAX reverse type is darkly ironic — his reign was characterized by near-constant military pressure on multiple frontiers and persistent internal revolt, including a serious usurpation by his own troops.

By this point in the Gallic Empire's coinage, silver content had essentially vanished. The bimetallic designation reflects a silver-washed bronze rather than any genuine alloy, a feature shared across the late Tetrican issues and a reliable indicator of the fiscal exhaustion that preceded the empire's reabsorption into Aurelian's reunified Roman state.