Nummus - Diocletian IOVI CONS CAES, Jupiter, Alexandria

By 304–305, Diocletian's tetrarchic system was already under internal strain. This issue belongs to the final months before his abdication at Nicomedia in May 305 — the only voluntary resignation of a reigning Roman emperor in the history of the Principate and Dominate. The Alexandria mint was one of the most productive eastern workshops under the Diocletianic reform coinage, and RIC VI 41 is a relatively well-documented type within that output.

The IOVI CONS CAES reverse links the Caesar — in this case Galerius — to Jupiter as divine protector, a deliberate theological architecture Diocletian used to legitimize the entire tetrarchic hierarchy.