The Half-Centenionalis denomination
The half centenionalis is the smaller counterpart to the centenionalis, which was the attempt of Constans and Constantius II to reintroduce a large bronze coin between 320 and 340 AD, as the follis had by then shrunk dramatically.

Neither the centenionalis nor the half centenionalis lasted very long. By the end of Theodosius the Great's rule, only smaller varieties of bronze coins were minted.
Half-Centenionalis

(1) Aelia Eudoxia 401-403 AD
Obverse: diademed, draped bust right, being crowned by Hand of God; AEL EVDO_XIA AVG
Reverse: Victory seated right, holding shield with (XP) inside on column; SALVS REI_PVBLICAE / SMKA?
Ref: RIC X 103, SRCV 4241?
(2) Aelia Eudoxia 400-401 AD
Obverse: diademed and draped bust right, hand of god above; AEL EVDO_XIA AVG
Reverse: Eudoxia seated facing, hands folded over breast, crowned by hand of god, cross left; GLORIA RO_MANORVM / CON?
Ref: RIC X Constantinople 77 (S gamma) /...
(3) Aelia Flaccilla 383-386 AD
Obverse: AEL FLACCILLA AVG - Diademed, draped bust bust right.
Reverse: SALVS REIPVBLICAE, Victory seated right, inscribing chi-rho monogram on shield set on cippus before her
Ref: RIC 17, Sear 20625
(4) Aelia Flaccilla 383 A.D.
Obverse: AEL FLACCILLA AVG, mantled bust right in elaborate headdress & necklace
Reverse: SALVS REIPVBLICAE, Victory seated right, inscribing a christogram on shield set on narrow column. T in right field. Mintmark CON Epsilon.
Ref: RIC 81
(5) Arcadius 393-395 AD
Obverse: DN ARCADIVS PF AVG
Reverse: SALVS REI-PVBLICAE, Victory walking left, trophy on shoulder, dragging captive behind her. Chi-Rho in left field.
Ref: Sear 20847
(6) Arcadius AD 388-392
Obverse: DN ARCADIVS PF AVG, diademed, draped and cuirassed bust right
Reverse: SALVS REI PVBLICAE, Victory walking left, trophy on shoulder, dragging captive behind her. Chi-Rho in left field.
Ref: Sear 20852
(7) Arcadius 388-393 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N ARCADI_VS P F AVG
Reverse: Victory advancing left, holding trophy and dragging captive; SALVS REI_PVBLICAE / (XP) / AQS
Ref: RIC IX Aquileia 58c
(8) Arcadius 395-401 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N ARCADI_VS P F AVG
Reverse: Arcadius standing, facing, holding labarum and resting hand on shield; being crowned by Victory to right, holding palm; VIRTVS_EXERCITI / CONSA
Ref: RIC X 60
(9) Arcadius 383 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N ARCADIVS P F AVG
Reverse: VOT / V within wreath; SMNΓ
Ref: RIC IX Nicomedia 37c
(10) Arcadius 388-392 AD
Obverse: pearl-didemed, draped and cuirassed bust right; D N ARCADIVS P F AVG
Reverse: Victory dragging bounded captive left, trophy on shoulder; SALVS REI_PVBLICAE / (XP) / SMKA
Ref: RIC IX Cyzicus 26c/30b
(11) Arcadius 388-392 AD
Obverse: D N ARCADIVS P F AVG / pearl-diademed, draped, and cuirassed bust right
Reverse: SALVS REI-PVBLICAE, Victory walking left, dragging captive; CONS?
Ref: RIC IX Constantinople 86c; Sear 208...
(12) Avitus
Obverse: plain diademed bust no letters visible
Reverse: Victory, winged, draped, standing left holding wreath in right hand, epsilon left field, RM mint mark
Ref: None provided
(13) City Commemorative 330-335 AD
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•
Ref: RIC 86 (VII, Constantinople)
(14) City Commemorative 330-333 AD
Obverse: helmeted, bust of Roma left wearing imperial cloak; VRBS__ROMA
Reverse: she-wolf and twins Romulus and Remus, * * above; •SMHE
Ref: RIC VII Heraclea 119
(15) City Commemorative 330-333 AD
Obverse: Roma helmeted, draped and cuirassed bust left; VRBS__ROMA
Reverse: she-wolf and twins Romulus and Remus, ** above; SMKΔ
Ref: RIC 90 (VII, Cyzicus)
(16) City Commemorative 334-335 AD
Obverse: Roma helmeted, draped and cuirassed bust left; VRBS__ROMA
Reverse: she-wolf and twins Romulus and Remus, ** above; ·ΓSIS·
Ref: RIC VII Siscia 240
(17) City Commemorative 330-336 AD
Obverse: helmeted bust of Roma left wearing imperial cloak; VRBS_ROMA
Reverse: she-wolf and twins Romulus and Remus, ** above; ?SMK?
Ref: RIC 72/91/106/119 (VII, Cyzicus)
(18) City Commemorative 330-333 AD
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
Ref: RIC VII Thessalonica 188
(19) City Commemorative 330-333 AD
Obverse: helmeted, draped and cuirassed bust of Roma left; VRBS_ROMA
Reverse: she-wolf and twins Romulus and Remus, ** above crescent on shoulder; SMTSE
Ref: RIC VII Thessalonica 187
(20) Constans 347-348 AD
Obverse: laureate-rosette-diademed, draped and cuirassed bust right; D N CONSTANS_P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / branch upright / SMTSA
Ref: RIC VIII Thessalonica 105
(21) Constans 347-348 AD
BL Half-Centenionalis Unknown mint
Obverse: rosette-diadem head right; D N CONSTA_NS P F AVG
Reverse: VOT / XX / . / MVLT / XXX within wreath; ???
Ref: RIC VIII (Heraclea 48, 52, Constant...
(22) Constans 346-348 AD
Obverse: laureate-rosette-diademed, draped and cuirassed bust right; CONSTANS_P F AVG
Reverse: two soldiers standing either side of a standard (G); GLORI_A EXERC_ITVS / SARL
Ref: RIC VIII Arles 58
(23) Constans 347-348 AD
Obverse: rosette-diademed, draped and cuirassed bust right; CONSTAN_S P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / ·ΓSIS·
Ref: RIC VIII Siscia 185
(24) Constans 347-348 AD
Obverse: rosette-diademed, draped and cuirassed bust right; CONSTAN_S P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / branch upright / ΓSIS
Ref: RIC VIII Siscia 195
(25) Constans 347-348 AD
Obverse: rosette-diademed, draped and cuirassed bust right; CONSTAN_S P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / branch upright / ΓSIS
Ref: RIC VIII Siscia 195
(26) Constans 346-348 AD
Obverse: rosette-diademed, draped and cuirassed bust righ;t CONSTAN_S P F AVG
Reverse: two soldiers standing either side of a standard (XP); GLOR_IA EXERC_ITVS / ΓSIS dot in crescent
Ref: RIC VIII Siscia 99
(27) Constans 346-348 AD
Obverse: laureate-rosette-diademed, draped and cuirassed bust right; CONSTAN_S P F AVG
Reverse: two soldiers standing either side of a standard (XP); GLOR_IA EXERC_ITVS / ΓSIS dot in crescent
Ref: RIC VIII Siscia 100
(28) Constans 346-348 AD
Obverse: rosette-laurel-didemed, draped and cuirassed bust right; D N FL CONSTANS AVG
Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / R*T
Ref: RIC VIII Rome 26
(29) Constans 346-348 AD
Obverse: rosette-laurel-didemed, draped and cuirassed bust right; CONSTANS__P F AVG
Reverse: two soldiers standing either side of a standard; GLORI_A EXER_CITVS / SMTSA
Ref: RIC VIII Thessalonica 57
(30) Constans 347-348
Obverse: CONSTANTI-VS P F AVG: Bust of Constantius II, rosette-diademed, draped, cuirassed, right
Reverse: VICTORAE DD AVGGQ NN: Two Victories, winged, draped, standing front, facing each other, each holding wreath in right hand and palm in left hand
Ref: RIC VIII 193
(31) Constans 340-350
Obverse: CONSTAN-S PF AVG, laurel and rosette-diademed, draped and cuirassed bust right
Reverse: VICTORIAE DD AVGG Q NN, two Victories facing each other, each holding a wreath and palm branch. Mintmark dot AQP
Ref: RIC VIII Aquileia 79P
(32) Constantine I 330-335 AD
Obverse: square-rosette-diadem, draped, cuirassed bust right; CONSTANTI_NVS MAX AVG
Reverse: two soldiers standing either side of two standards; GLOR_IA EXERC_ITVS / ΔSIS
Ref: RIC VII Siscia 219
(33) Constantine I IX 337 - 340 AD
Obverse: veiled head right; DV CONSTANTI_NVS PT AVGG
Reverse: Constantine riding quadriga right, Hand of God above; SMKA·
Ref: RIC VIII Cyzicus 19
(34) Constantine II 330-335 AD
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
Ref: RIC VII Cyzicus 80
(35) Constantine II 337 AD
Obverse: laureate, cuirassed bust right; CONSTANTINVS IVN NOB C
Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / ?SIS*
Ref: RIC VII Siscia 262
(36) Constantius II 348-350 A.D.
Obverse: DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right
Reverse: FEL TEMP REPARATIO, radiate phoenix standing right on globe.
Ref: RIC VIII Constantinople 93B.
(37) Constantius II 348-350 A.D.
Obverse: D N CONSTAN-TIVS P F AVG, diademed, draped, cuirassed bust right
Reverse: FEL TEMP REPARATIO, emperor in military dress standing left on galley, holding phoenix on globe and a standard with Chi-Rho in the banner; Victory at helm steers the ship
Ref: Thessalonica RIC VIII 119
(38) Constantius II 337-340 AD
Obverse: pearl-rosette-diademed head right; D N CONSTAN_TIVS P F AVG
Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / CONSΘ
Ref: RIC VIII Constantinople 43
(39) Constantius II 337-341 AD
Obverse: pearl-diadem, draped, cuirassed bust right; CONSTAN_TIVS AVG
Reverse: two soldiers standing either side of a standard; · · around standard; GLOR_IA EXERC_ITVS / SMANΔ
Ref: RIC VIII Antioch 52
(40) Constantius II 347-348 AD
Obverse: laureate-rosette-diademed, draped and cuirassed bust right; CONSTANTI_VS P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / · / SMTSE
Ref: RIC VIII Thessalonica 99
(41) Constantius II 333-335 AD
Obverse: laureate, draped and cuirassed bust right; FL IVL CONSTANTIVS NOB C
Reverse: two soldiers standing either side of two standards; GLOR_IA EXERC_ITVS / CONSS·
Ref: RIC VII Constantinople 75, LRBC 101...
(42) Constantius II 347-348 AD
Obverse: laureate-rosette-diademed, draped and cuirassed bust right; CONSTANTI_VS P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / · / SMTSΔ
Ref: RIC VIII Thessalonica 99
(43) Constantius II 330-333 AD
Obverse: laureate, draped and cuirassed bust right; FL IVL CONSTANTIVS NOB C
Reverse: two soldiers standing either side of two standards; GLOR_IA EXERC_ITVS / SMHΔ*
Ref: RIC VII Heraclea 138
(44) Constantius II 330-335 AD
Obverse: laureate cuirassed bust right; FL IVL CONSTANTIVS NOB C
Reverse: two soldiers standing either side of two standards; GLOR_IA EXERC_ITVS / SMANH
Ref: RIC VII Antioch 88
(45) Constantius II 337-341 AD
Obverse: laureate head right; D N CONSTAN_TIVS P F AVG
Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / ?SMK?
Ref: RIC VIII Cyzicus (16;21;23;27;32)
(46) Constantius II 337-341 AD
Obverse: rosette-diademed, draped and cuirassed bust right; CONSTANTI_VS P F AVG
Reverse: two soldiers standing either side of a standard (XP); GLOR_IA EXERC_ITVS / ·ΔSIS·
Ref: RIC VIII Siscia 101
(47) Constantius II 337-341 AD
Obverse: laureate, cuirassed bust right; FL IVL CONSTANTIVS AVG
Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / TRP branch
Ref: RIC VIII Trier 82
(48) Constantius II 337-341 AD
Obverse: pearl-diadem head right; CONSTAN_TIVS AVG
Reverse: two soldiers standing either side of a standard, · · around standard; GLOR_IA EXERC_ITVS / SMANΔI
Ref: RIC VIII Antioch 54
(49) Constantius II 347-348 AD
Obverse: rossete-diademed head right; D N CONSTAN_TIVS P F AVG
Reverse: VOT / XX / . / MVLT / XXX within wreath; CONSΓ
Ref: RIC VIII Constantinople 69
(50) Constantius II 347-348 AD
Obverse: pearl-diadem, draped, cuirassed bust right; D N CONSTAN_TIVS P F AVG
Reverse: VOT / XX / MVLT / XXX within wreath; SMALA?
Ref: RIC VIII Alexandria 33 / 36 ( , · )
(51) Constantius II 347-348 AD
Obverse: laureate-rosette-diademed, draped and cuirassed bust right; CONSTANTI_VS P F AVG
Reverse: two Victories standing, facing each other, each holding a wreath and palm; VICTORIAE DD AVGGQ NN / SMTS?
Ref: RIC VIII Thessalonica 99 (SMTSA, SM...
(52) Constantius II 337-340 AD
Obverse: pearl-rosette-diademed head right; CONSTAN_TIVS AVG
Reverse: two soldiers standing either side of a standard; GLOR_IA EXERC_ITVS / SMHA
Ref: RIC VIII Heraclea 22
(53) Delmatius 335-335 A.D.
Obverse: FL DELMATIVS NOB C, laureate, draped, cuirassed bust right
Reverse: GLORIA EXERCITVS, BSIS in exergue, two soldiers flanking a single standard
Ref: RIC VII: 256 Siscia
(54) Gratian 383 AD
AE Half-Centenionalis Unknown mint
Obverse: DN GRATIANVS PF AVG
Reverse: VOT XX MVLT XXX, in four lines within wreath
Ref: Sear 20158ff
(55) Helena 337-340 AD
Obverse: diademed and draped bust right; FL IVL HE_LENAE AVG
Reverse: Pax standing half left, holding branch pointing left and long scepter; PA_X PV-BLICA / TRP branch
Ref: RIC VIII Trier 90
(56) Helena 337-340 AD
Obverse: diademed, draped bust right; FL IVL HE_LENAE AVG
Reverse: Pax standing left, holding branch and scepter; PA_X PV_BLICA / ?TRP?
Ref: RIC VIII Trier (47, 55, 63, 78, 90)
(57) Helena 337-340 AD
Obverse: draped bust right with broad diadem; FL IVL HELE_NAE AVG
Reverse: Pax standing left, holding branch and scepter; PA_X PV_BLICA· / CONSE
Ref: RIC VIII Constantinople 35
(58) Honorius 406-408 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N HONORIVS P F AVG / *
Reverse: Three emperors (Arcadius, Theodosius II, Honorius) standing, holding spears and shields; GLORI_A ROMA_NORVM / SMKB
Ref: RIC X Cyzicus 149
(59) Honorius 395-401 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N HONORI_VS P F AVG
Reverse: Honorius standing, facing, holding labarum and resting hand on shield; being crowned by Victory to right, holding palm; VIRTVS_EXERCITI / ANTΓ
Ref: RIC X 72
(60) Honorius 406-408 AD
Obverse: pearl-didemed, draped and cuirassed bust right; D N HONORI_VS P F AVG / *
Reverse: Three emperors (Arcadius, Theodosius II, Honorius) standing, holding spears and shields; GLORI_A ROMA_NORVM / ANTA
Ref: RIC X Antioch 153
(61) Theodosius I 388-395 AD
Obverse: DN THEODOSIVS PF AVG, diademed, draped and cuirassed bust right
Reverse: SALVS REI-PVBLICAE, Victory walking left, trophy on shoulder, dragging captive behind her. Cross in left field.
Ref: Sear 20562
(62) Theodosius I 378-383
Obverse: pearl-diademed draped and cuirassed bust right; D N THEODO_SIVS P F AVG
Reverse: VOT / X / MVLT / XX within wreath; ALEΓ
Ref: RIC IX 13(c)
(63) Theodosius I 388-395 AD
Obverse: pearl-diademed draped and cuirassed bust right; D N THEODO_SIVS P F AVG
Reverse: Victory advancing left, holding trophy and dragging captive; SALVS REI_PVBLICAE / (XP) / CONSA
Ref: RIC IX Constantinople 86b/90a
(64) Theodosius II 425-435 AD
AE Half-Centenionalis Unknown mint
Obverse: DN THEODOSIVS PF AVG, Diademed and draped bust right
Reverse: Cross in wreath
Ref: Sear 21231-21234
(65) Theodosius II 425-435 AD
Obverse: pearl-didemed, draped and cuirassed bust right; D N THEODO_SIVS P F AVG
Reverse: christian cross within wreath wreath (X in jewel); SMKB
Ref: RIC X 449
(66) Theodosius II 425-435 AD
AE Half-Centenionalis Unknown mint
Obverse: pearl-diademed, draped and cuirassed bust right; D N THEODOSIVS P F AVG
Reverse: Victory facing, holding wreath in each hand; CONCORDI AVG / ???
Ref: RIC X (431-439)?
(67) Valentinian II 388-392 AD
Obverse: DN VALENTINIANVS PF AVG
Reverse: SALVS REI-PVBLICAE, Victory walking left, trophy on shoulder, dragging captive behind her. Cross in left field?
Ref: Sear 20345
(68) Valentinian II 383-388 AD
AE Half-Centenionalis Unknown mint
Obverse: pearl-diademed, draped and cuirassed bust right; D N VALENTINIANVS P F AVG
Reverse: VOT / X / MVLT / XX within wreath; ???
Ref: Van Meter 53 (Valentinian II)
(69) Valentinian II 383-388 AD
Obverse: pearl-didemed, draped and cuirassed bust right D N VALENTINIANVS P F AVG
Reverse: VOT / X / MVLT / XX within wreath; TES
Ref: RIC IX Thessalonica 49a