Diocletian
Antioch 284-305 CE
Æ Radiatus 20mm, 3,42g
Diocletian
Heraclea 284-305 CE
BI Antoninianus 20mm, 2.72 g
Obv: IMP C C VAL DIOCLETIANVS P F AVG. Radiate, draped and cuirassed bust right.
Rev: CONCORDIA MILITVM / HΓ. Jupiter standing left, holding sceptre and presenting Victory on globe to emperor standing right
RIC 13
293 CE
March 1

Maximian promotes Constantius Chlorus to Caesar with the approval of Diocletian.

296 CE

Constantine I fights against barbarians on the Danube for Diocletian.

297 CE

Constantine I fights against Persians in Syria with Diocletian.

303 CE
February 23

Diocletian orders the new church in Nikomedia destroyed and its treasure taken.

305 CE
May 1

Diocletian announces his resignation. Maximian follows suit. Constantius and Galerius are promoted to Augusti, while Severus II and Maximinus are appointed Caesars.

308 CE
November 11

Galerius calls a council to discuss the disruptive western provinces. Diocletian and Maximian attend. Maximian is forced to abdicate and Constantine the Great is demoted to Caesar under the new Augustus Licinius.