Aureus - Carausius OPES IVI AVG, Rotomagus

Carausius seized control of Britain and northwestern Gaul in 286 after being ordered executed by Maximian — ostensibly for embezzling recovered pirate loot, more plausibly for becoming too powerful to tolerate. He responded by declaring himself Augustus and running a remarkably coherent breakaway regime for seven years. The Rotomagus mint, modern Rouen, was his continental foothold, operating briefly before Constantius Chlorus retook the Gallic territories around 293.

The RIC V.2 number is unassigned, placing this piece outside the standard catalogued sequence — Shiel's specialized study of Carausian coinage remains the authoritative reference for types like this one.