City Commemorative Authority in from to .
City commemoratives are small bronze coins stucj by Constantine I 'the Great' and his sons to the effect of commemorating the old capital, Rome, and the new capital, Constantinople, and to symbolize the equality of the two cities and the new importance of Constantinople to the empire.

Most common types are the CONSTANTINOPOLIS with a Victory on Prow reverse, and the VRBS ROMA with a Wolf & Twin reverse.
City Commemorative
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An AE Centenionalis struck 330-333 A.D. in Cyzicus
Obverse: CONSTANTINOPOLI, laureate and helmeted bust of Constantinopolis left, sceptre over shoulder

Reverse: Victory standing left, foot on the prow of a ship, holding sceptre and leaning on shield,

Diameter: 17 mm
Die Orientation: 0 H
Weight: 2.3 g

Mintmark SMKS.

RIC 92
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An AE unit struck 306-337 A.D. in Siscia
Obverse: VRBS ROMA - Helmeted with plume bust of Roma left, cuirassed.

Reverse: Rev: no legend - Wolf and twins Romulus and Remus, two stars above.

Diameter: 17.5 mm
Die Orientation: 0 H
Weight: 2.31 g
Mintmark dot gamma SIS dot
RIC VII 240
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An AE unit struck 330 - 331 AD in Lugdunum
Obverse: VRBS ROMA, bust left of Roma in plumed helmet and imperial mantle

Reverse: she-wolf standing left, sucking twins, 2 stars above. Mintmark SLG

Diameter: -
Die Orientation: -
Weight: 2.35 g
R2
RIC VII Lyons 242/275
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An AE unit struck 330 - 331 AD in Rome
Obverse: VRBS ROMA, bust left of Roma in plumed helmet and imperial mantle

Reverse: she-wolf standing left, sucking twins, 2 stars above. Mintmark SLG

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
RIC VII Rome 354; Sear 16508
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An AE Half-Centenionalis struck 330-335 AD in Constantinopolis
Obverse: Constantinopolis helmeted, laureate bust left, holding scepter over shoulder; CONSTAN_TINOPOLI

Reverse: Victory standing left, stepping on galley prow, cradling scepter and resting hand on shield; •CONSIA•

Diameter: 19 mm
Die Orientation: -
Weight: 2.3 g
Constantinople Commemorative •CONSIA• isn't listed in Helvetica's list!
RIC 86 (VII, Constantinople)
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An AE Half-Centenionalis struck 330-333 AD in Heraclea
Obverse: helmeted, bust of Roma left wearing imperial cloak; VRBS__ROMA

Reverse: she-wolf and twins Romulus and Remus, * * above; •SMHE

Diameter: -
Die Orientation: -
Weight: 2.71 g
No notes for this coin
RIC VII Heraclea 119
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An AE Half-Centenionalis struck 330-333 AD in Cyzicus
Obverse: Roma helmeted, draped and cuirassed bust left; VRBS__ROMA

Reverse: she-wolf and twins Romulus and Remus, ** above; SMKΔ

Diameter: 18 mm
Die Orientation: -
Weight: 1.77 g
No notes for this coin
RIC 90 (VII, Cyzicus)
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An AE Half-Centenionalis struck 334-335 AD in Siscia
Obverse: Roma helmeted, draped and cuirassed bust left; VRBS__ROMA

Reverse: she-wolf and twins Romulus and Remus, ** above; ·ΓSIS·

Diameter: -
Die Orientation: -
Weight: 2.09 g
No notes for this coin
RIC VII Siscia 240
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An AE Half-Centenionalis struck 330-336 AD in Cyzicus
Obverse: helmeted bust of Roma left wearing imperial cloak; VRBS_ROMA

Reverse: she-wolf and twins Romulus and Remus, ** above; ?SMK?

Diameter: -
Die Orientation: -
Weight: 2.16 g
No notes for this coin
RIC 72/91/106/119 (VII, Cyzicus)
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An AE Half-Centenionalis struck 330-333 AD in Thessalonica
Obverse: Constantinopolis helmeted, laureate bust left, holding scepter over shoulder, wearing imperial cloak; CONSTAN_TINOPOLIS

Reverse: Victory standing left, stepping on galley prow, cradling scepter and resting hand on shield; SMTSΔ

Diameter: -
Die Orientation: -
Weight: 1.72 g
No notes for this coin
RIC VII Thessalonica 188
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An AE Half-Centenionalis struck 330-333 AD in Thessalonica
Obverse: helmeted, draped and cuirassed bust of Roma left; VRBS_ROMA

Reverse: she-wolf and twins Romulus and Remus, ** above crescent on shoulder; SMTSE

Diameter: -
Die Orientation: -
Weight: 2.15 g
No notes for this coin
RIC VII Thessalonica 187