Antoninianus - Diocletianus IOVI CONSERVAT, Jupiter

Diocletian's coinage from this period reflects the near-total collapse of Rome's silver currency. By the time he took power in 284, the antoninianus had been debased to roughly 2–5% silver content, a far cry from its original 50% under Caracalla. The Jupiter reverse on this type was central to Diocletian's ideological program: he adopted the title Iovius, casting himself as Jupiter's earthly representative, while his co-emperor Maximian took the title Herculius.

RIC V.2 223F places this among the earlier Diocletianic issues, predating the monetary reforms of 294 that attempted to restore silver coinage through the argenteus.