Antoninianus - Postumus LAETITIA AVG, Lugdunum

Postumus seized power in 260 AD after executing Saloninus, the son of Gallienus, at Cologne — an act that simultaneously announced his usurpation and made reconciliation with the central empire impossible. His Gallic breakaway state, covering the Rhine provinces, Britain, and Spain at its peak, required an immediate and credible coinage to pay the legions whose loyalty he had just purchased with that same act of violence. Lugdunum was a natural choice for early production, with its long mint history and distance from Gallienus's reach.

RIC V.2 #73 belongs to his first emission, 260–261, before the Cologne mint dominated output.