Maximian - Augustus of Imperium Romanum from 286 to 310
Marcus Aurelius Valerius Maximianus Herculius Augustus was Roman Emperor from 286 to 305.

He was Caesar from 285 to 286, then Augustus from 286 to 305. He shared the latter title with his co-emperor and superior, Diocletian, whose political brain complemented Maximian's military brawn.

In late 306, Maximian took the title of Augustus again and aided his son Maxentius' rebellion in Italy. In 308, Diocletian and his successor, Galerius, forced Maximian to renounce his imperial claim again. In early 310, Maximian attempted to seize Constantine's title. Few supported him, and he was captured by Constantine in Marseille. Maximian killed himself in mid-310 on Constantine's orders.
Emperor Maximian "Hercules-like" of the Roman Empire

Epithet: Herculius ("Hercules-like")

(1) Maximian 291-292 AD
Obverse: laureate, draped and cuirased bust right; MAΞIMI_ANOC CEB
Reverse: Nike with wreath and palm branch advancing right; L_* / Z
Ref: Milne 5031, Curtis 2101, Geissen 33...
(2) Maximian 306-307 AD
Obverse: IMP MAXIMIANUS P F AVG, laureate head right
Reverse: FIDES MILITVM AVGG ET CAESS NN, Fides standing holding standard in each hand, AQP in exergue
Ref: RIC VI 60b
(3) Maximian 295-296 AD
Obverse: IMP C M A MAXIMIANVS PF AVG, radiate, draped, cuirassed bust right
Reverse: CONCORDIA MI-LITVM, Emperor standing right, receiving Victory on globe from Jupiter, standing left and holding sceptre. KΔ in lower centre
Ref: RIC16b
(4) Maximian 305-307 AD
Obverse: IMP MAXIMIANVS P F AVG, Bust of Maximian facing right, wearing laurel wreath, and cuirass
Reverse: GENIO POPVLI ROMANI, Genius standing facing, head left, tower on head, naked but for chlamys over left shoulder, holding patera and cornucopia; SF in fields; PTR in exergue
Ref: RIC VI Treveri 642b
(5) Maximian 296-297 A.D.
AE unit Alexandria
Obverse: IMP C M A MAXIMIANVS P F AVG Radiate, draped, cuirassed bust right
Reverse: CONCORDIA MIL_ITVM Emperor standing right in military dress, short scepter in left hand, receiving Victory on globe from Jupiter standing left, scepter in left hand
Ref: RIC VI, 46b
(6) Maximian 299 A.D.
AE unit Ticinum
Obverse: IMP C M A MAXIMIANVS PF AVG, radiate head right.
Reverse: VOT XX P in three lines within wreath.
Ref: RIC 36b
(7) Maximian AD 307
Obverse: D N MAXIMIANO P F S AVG, laureate and cuirassed bust right
Reverse: GENIO POP ROM, Genius standing left, holding patera and cornucopiae; PLN in exergue
Ref: RIC 85; S 704; Sear 13444
(8) Maximian 305-306 AD
Obverse: laureate bust dressed in imperial mantle right holding olive-branch and mappa; D N MAXIMIANO BAEATISSIMO SEN AVG
Reverse: Quies standing left extending hand against Providentia who is holding scepter and branch; PROVIDENTIA DEORVM QVIES AVGG / S_·_F / AQS
Ref: RIC VI Aquileia 63b
(9) Maximian 318-319 AD
Obverse: Veiled laureate head right; DIVO MAXIMIANO SEN FORT IMP
Reverse: Emperor seated left on curule chair, holding short scepter, raising right hand; REQVIES OPTIM_ORVM MERITORVM / SIS
Ref: RIC VII Siscia 41
(10) Maximian 295 AD
Obverse: laureate head right; MAXIMIA_NVS AVG
Reverse: tetrarchs sacrificing before six-turreted enclosure; VIRTVS_MILITVM
Ref: RIC 18b; RSC 622d
(11) Maximian | Carausius 292-293 AD
Obverse: radiate and cuirassed bust right; IMP C MAXIMIANVS P F AVG
Reverse: Pax standing half left holding palm branch and long scepter; PAX__A_VGGG/ S_P / MLXXI
Ref: RIC V 34