Constantine II Emperor of the Roman Empire from 337 to 340.
Flavius Claudius Constantinus Augustus was Roman Emperor from 337 to 340.

Constantine II was the eldest son of Constantine the Great and Fausta, after the death of his half-brother Crispus.

Following the death of his father in 337, Constantine II initially became emperor jointly with his brothers Constantius II and Constans, with the Empire divided between them and their cousins, the Caesars Dalmatius and Hannibalianus.

Constantine II was initially the guardian of his younger brother Constans, but after Constans came of age the brothers quarreled over territory. In 340 AD, Constantine II was killed in an ambush outside Aquileia, and Constans took over his realm.
Constantine II
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An BL Follis struck 330-333 AD in Thessalonica
Obverse: CONSTANTINVS IVNIOR NOB C

Reverse: GLORIA EXCERCITVS

Diameter: 18 mm
Die Orientation: 0 H
Weight: 2.3 g
No notes for this coin
Sear 17335
(2) Constantine II
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An AE Follis struck 323-324 in Lugdunum
Obverse: CONSTANTINVS IVN NOB C, Laureate head right

Reverse: CAESARVM NOSTRORVM, Wreath containing VOT / X

Diameter: 17.5 mm
Die Orientation: 1 H
Weight: -
Found Lincolnshire.
RIC VII Lyons 217
(3) Constantine II
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An AE Follis struck 321 in Londinium
Obverse: CONSTANTI - NVS IVN NC, Radiate draped cuirassed bust left

Reverse: BEATA TRA - NQVILLITAS, Altar with VOT / IS / XX inscribed on three lines, globe on top, three stars above

Diameter: 21 mm
Die Orientation: 6 H
Weight: -
Found south of Ipswich, Suffolk.
RIC VII London 216
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An AE Follis struck 324 AD in Heraclea
Obverse: CONSTANTINVS IVN NOB C, Bust of Constantine II facing right, wearing laurel wreath, cuirass, and drapery

Reverse: PROVIDENTIAE CAESS, Campgate of six layers with three turrets on top, no door, star above; .SMHB. in exergue

Diameter: 20 mm
Die Orientation: 6 H
Weight: 2.6 g
Constantine II as Caesar under Constantine I "the Great"
Second officina in Heraclea mint
RIC VII Heraclea 67
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An AE Follis struck AD 324 in Thessalonica
Obverse: CONSTANTINVS IVN NOB C, Laureate, draped and cuirassed bust left

Reverse: VOT/·/X in three lines within wreath, TSBVI

Diameter: 18 mm
Die Orientation: 12 H
Weight: 3.3 g
No notes for this coin
RIC VII 128
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An AE Nummus struck AD 322-323 in Londinium
Obverse: CONSTANTINVS IVN N C, helmeted and cuirassed bust left

Reverse: BEAT TRANQLITAS, globe on altar inscribed VOTIS XX in three lines; three stars above, PLON in exergue

Diameter: 19 mm
Die Orientation: 6 H
Weight: 3.82 g
No notes for this coin
RIC 287; Sear 17149
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An AE Follis struck 330-335 A.D. in Cyzicus
Obverse: CONSTANTINVS IVN NOB C, laureate, draped and cuirassed bust right

Reverse: GLOR-IA EXERC-ITVS, two soldiers, each holding spear and shield, two standards between them.

Diameter: 17.9 mm
Die Orientation: 0 H
Weight: 2.61 g

Mintmark star SMK Epsilon.

RIC VII Cyzicus 112
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An AE unit struck 337-340 A.D. in Nicomedia
Obverse: FL IVL CONSTANTIVS NOB C, laureate, draped, cuirassed bust right

Reverse: PROVIDEN-TIAE CAESS, campgate, 2 turrets, 7 layers, dots in top layer, star above, no doors.

Diameter: 18.5 mm
Die Orientation: 0 H
Weight: 2.6 g

Mintmark: SMNΔ dot

RIC 158 var.
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An AE Centenionalis struck 327-329 AD in Heraclea
Obverse: laureate, draped and cuirassed bust right; CONSTANTINVS IVN NOB C

Reverse: Camp gate with 2 turrets, 8 layers * above; PROVIDEN_TIAE CAES S / · / SMHB

Diameter: 19 mm
Die Orientation: -
Weight: 2.54 g
No notes for this coin
RIC VII Heraclea 96
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An BL Centenionalis struck 328-329 AD in Siscia
Obverse: laureate head right; CONSTANTINVS IVN NOB C

Reverse: gate (2 turrets, 7 layers, dots in highest and lowest layer), star above; PROVIDEN_TIAE CAESS / ESIS double crescent

Diameter: -
Die Orientation: -
Weight: 2.8 g
No notes for this coin
RIC VII Siscia 216
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An AE Centenionalis struck 324 AD in Thessalonica
Obverse: laureate, draped and cuirassed bust left; CONSTANTINVS IVN NOB C

Reverse: VOT / • / X within wreath; CAESARVM NOSTRORVM / TSBVI

Diameter: -
Die Orientation: -
Weight: 3 g
No notes for this coin
RIC VII Thessalonica 128
(12) Constantine II
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An AE Centenionalis struck 321-324 AD in Siscia
Obverse: laureate head right; CONSTANTINVS IVN NOB C

Reverse: VOT / • / X within wreath; CAESARVM NOSTRORVM / ΓSIS sunrise

Diameter: -
Die Orientation: -
Weight: 3.44 g
No notes for this coin
RIC VII Siscia 182
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An AE Half-Centenionalis struck 330-335 AD in Cyzicus
Obverse: Laureate, draped and cuirassed bust right; CONSTANTINVS IVN NOB C

Reverse: Two soldiers standing either side of two standards; GLOR_IA EXERC_ITVS / SMKΔ

Diameter: 17 mm
Die Orientation: -
Weight: 2.24 g
No notes for this coin
RIC VII Cyzicus 80
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An AE Half-Centenionalis struck 337 AD in Siscia
Obverse: laureate, cuirassed bust right; CONSTANTINVS IVN NOB C

Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / ?SIS*

Diameter: 14 mm
Die Orientation: -
Weight: 0.77 g
No notes for this coin
RIC VII Siscia 262
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An AE Nummus struck AD 330-333 in Constantinople
Obverse: CONSTANTINVS IVN NOB C, laureate and cuirassed bust right

Reverse: GLOR-IA EXERC-ITVS, Two soldiers standing facing each other, each resting on spear and shield, two standards between them; CONSΓ in exergue

Diameter: 17 mm
Die Orientation: 6 H
Weight: 2.4 g
No notes for this coin
RIC 60; Sear 17338
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An AE unit struck 325-326 in Cyzicus
Obverse: CONSTANTINVS IVN NOB C, laureate, draped and cuirassed bust left

Reverse: PROVIDEN-TIAE CAESS, campgate, seven layers, two turrets, star abvove, no doors

Diameter: 18.99 mm
Die Orientation: -
Weight: 2.7 g
No notes for this coin
RIC VII 37, Δ
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An AE Centenionalis struck 319-320 AD in Siscia
Obverse: laureate, draped and cuirassed bust right; CONSTANTINVS IVN NOB CAES

Reverse: two Victories facing each other, holding inscribed shield on inscribed cippus; VICTORIAE LAETAE PRINC PERP // VOT / PR / S / ΓSIS•

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
RIC VII Siscia 80 (var. Γ)
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An BL Nummus struck c. AD 320 in Londinium
Obverse: CONSTANTINVS IVN NOB C, radiate, trabeate and cuirassed bust left

Reverse: VIRTVS EXERCIT, standard inscribed VOT XX with captive seated on ground to either side; PLN in exergue

Diameter: 19 mm
Die Orientation: 5 H
Weight: 3.25 g

Ex. Brian Henry Grover Collection (Roma Numismatics E-Sale 72; Lot 1612)

CT 9.02.010; RIC 197 cor. (obv. bust)