Antoninianus - Maximianus IOVI CONSERVAT, Jupiter

Maximianus issued this coin as co-emperor under the Tetrarchic system Diocletian formalized in 293 AD — the IOVI CONSERVAT reverse type was not incidental. Jupiter was deliberately assigned as the divine patron of Diocletian's senior Jovian dynasty, while Maximianus's own line took Hercules. A coin invoking Jupiter from Maximianus's mint is therefore a pointed assertion of collegiate piety toward his senior colleague, not merely conventional flattery of the gods.

RIC V.2 563C places this among the Cyzicus issues of the pre-Tetrarchic reform coinage, before Diocletian's currency overhaul standardized the antoninianus out of existence entirely.