Maxentius - Augustus of Imperium Romanum from 306 to 312
Marcus Aurelius Valerius Maxentius Augustus was Roman Emperor from 306 to 312. He was the son of former Emperor Maximian and the son-in-law of Emperor Galerius.

When Constantius Chlorus died in 306, his son Constantine was crowned emperor and subsequently accepted by Galerius into the tetrarchy as Caesar. This set the precedent for Maxentius' accession later in the same year.

The latter part of his reign was preoccupied with civil war, allying with Maximinus II against Licinius and Constantine. The latter defeated him at the Battle of the Milvian Bridge in 312, where Maxentius, with his army in flight, perished by drowning in the Tiber River.
Maxentius
Emperor Maxentius of the Roman Empire

(1) Maxentius 308-309 AD
Obverse: IMP C MAXENTIUS PF AVG, Laureate bust right
Reverse: Hexastyle temple, with wreath in pediment and containing Roma seated facing on throne, head left, holding globe and spear; shield to right
Ref: RIC VI 202a
(2) Maxentius AD 306-312
Obverse: IMP C MAXENTIUS P F AVG, Laureate head right
Reverse: AETERNITAS AVG N, The Dioscuri standing facing each other, each holding sceptre and bridles of their horse
Ref: RIC 35; Sear 14975
(3) Maxentius 309-312 AD
Obverse: IMP C MAXENTIVS P F AVG, Head of Maxentius facing right, wearing laurel wreath
Reverse: VICTORIA AETERNA AVG N, Victory wearing drapery, advacing left, holding wreath and palm; MOSTP in exergue
Ref: RIC VI Ostia 54
(4) Maxentius 309 A.D.
Obverse: IMP C MAXENTIVS P F AVG, laureate head right
Reverse: AETE-RNITAS A-VGN, Castor and Pollux standing facing each other, each leaning on sceptre and holding bridled horse.
Ref: RIC VI 14
(5) Maxentius 308-310 AD
Obverse: IMP C MAXENTIVS P F AVG, laureate head right
Reverse: CONSERV VRB SVAE, Roma seated facing, head left, holding flobe, in hexastyle temple with peaked roof, wreath in pediment. Mintmark RBT
Ref: RIC 210; Sear 14987.
(6) Maxentius 309-312 AD
Obverse: laureate head right; IMP C MAXENTIVS P F AVG
Reverse: Castor and Pollux, each with star above cap, chlamys over shoulder, leaning on scepter with outer arm, holding bridled horse with inner hand; AETE_RNITAS__AVG N / MOSTS
Ref: RIC 35; Cohen 5; Sear 14975
(7) Maxentius 308-310 AD
Obverse: laureate head right; IMP C MAXENTIVS P F AVG
Reverse: Roma seated left within hexastyle temple, holding globe and sceptre, a shield to her right and rear; wreath in thympanon, 2 Victories on the corners; CONSERV_VRB SVAE / RBQ
Ref: RIC VI Rome 210
(8) Maxentius 312 BC
Obverse: IMP C MAXENTIVS P F AVG, laureate head right.
Reverse: AETERNITAS AVG N, the Dioscuri standing facing each other, their horses between; MOSTS in exergue.
Ref: RIC 35.
(9) Maxentius 309-312 AD
Obverse: IMP C MAXENTIVS P F AVG, Head of Maxentius facing right, wearing laurel wreath
Reverse: AETERNITAS AVG N, The Dioscuri Castor and Pollux standing facing each other, each holding scepter and holding a horse by the bridle; MOSTQ in exergue
Ref: RIC VI Ostia 35
(10) Maxentius 309 AD
Obverse: IMP MAXENTIVS P F AVG CONS II, Bust of Maxentius facing right, wearing laurel wreath, and Consular robes; holding eagle-tipped scepter
Reverse: CONSERV VRB SVAE, Roma seated facing left, in hexastyle temple, holding globe and scepter; shield at side; crescent in pediment
Ref: RIC VI Aquileia 125