Constantius I - Augustus of Imperium Romanum from 305 to 306
Marcus Flavius Valerius Constantius Herculius Augustus, commonly known as Constantius Chlorus, was Caesar from 293 to 305, and Augustus in the west from 305 to 306.

He was the father of Constantine the Great and founder of the Constantinian dynasty.

As Caesar, he defeated the usurper Allectus in Britain and campaigned extensively along the Rhine frontier, defeating the Alamanni and Franks. Upon becoming Augustus in 305, he launched a successful campaign against the Picts beyond the Antonine Wall. However, Constantius died suddenly in Eboracum (York) the following year.

His death sparked the collapse of the tetrarchic system of government inaugurated by the Emperor Diocletian.
Constantius I
Emperor Constantius I "the Pale" of the Roman Empire

Epithet: Chlorus ("the Pale")

(1) Constantius I 293 AD
Obverse: laureate, draped and cuirassed bust right; ΦΛA KWCTANTIOC K
Reverse: Elpis standing left, holding flower and raising skirt; L_A / A
Ref: Geissen 3347; Milne 5089; Dattari 6...
(2) Constantius I AD 307-309
Obverse: DIVO CONSTANTIO PIO, laureate, veiled and draped bust right
Reverse: MEMORIA FELIX, lighted altar adorned with garlands, eagle standing on either side; P LN in exergue
Ref: RIC 110; Sear 16419
(3) Constantius I 302-303 AD
Obverse: CONSTANTIVS NOB C, laureate and cuirassed bust right
Reverse: GENIO POPVLI ROMANI, Genius standing left, wearing modius and chlamys over shoulder, holding patera and cornucopia; S-F in fields/IITR in exergue
Ref: RIC 539a
(4) Constantius I 305-306 AD
Obverse: IMP CONSTANTIVS AVG, Bust of Constantius facing left, wearing laurel wreath, and cuirass
Reverse: GENIO POPVLI ROMANI - Genius standing facing, head left, before lighted altar, modius on head & chlamys over left shoulder, holding patera & cornucopia, star in right field; PLC in exergue
Ref: RIC VI Lugdunum 187a
(5) Constantius I 305-306 AD
Obverse: IMP C FL VAL CONSTANTIVS PF AVG, laureate head right.
Reverse: GENIO POPV-L-I ROMANI, Genius standing left, modius on head, naked except for chlamys over left shoulder, holding patera from which liquid flows, and cornucopiae. Mintmark: HTA
Ref: RIC VI Heraclea 24a
(6) Constantius I 305-306 A.D.
Obverse: CONSTANTIVS AVG, laureate head right.
Reverse: GENIO POP-VLI ROMANI, Genius standing left, holding patera and cornucopiae
Ref: RIC VI Siscia 169a
(7) Constantius I 295-296 AD
Obverse: radiate, cuirassed bust right; FL VAL CONSTANTIVS NOB CAES
Reverse: Constantius I standing right on left, holding scepter, receiving Victory on globe from Jupiter to right, holding scepter; CONCORDIA MILI_TVM / HB
Ref: RIC VI Heraclea 15
(8) Constantius I 300-301 AD
Obverse: laureate head right; CONSTANTIVS NOB CAES
Reverse: Moneta standing slightly left, holding scales and cornucopia; SACRA MON VRB AVGG ET CAESS NN / T club
Ref: RIC VI Rome 102a
(9) Constantius I c. AD 296-297
Obverse: FL VAL CONSTANTIVS NOB C, laureate and cuirassed bust right
Reverse: GENIO POPV-LI ROMANI, Genius standing left, holding patera and cornucopiae
Ref: CT 1.03.009 (2); RIC 30; Sear cf. 1...
(10) Constantius I 305-306 AD
Obverse: IMP C CONSTANTIVS P F AVG, Head of Constantius facing right, wearing laurel wreath
Reverse: FIDES MILITVM, Fides seated on throne, facing left, holding military standards; dot in right field; TT in exergue
Ref: RIC VI Ticinum 59a