Byzantion - A settlement in Thrace also known as Constantinopolis - Istanbul
Byzantion was an ancient Greek colony in early antiquity that later became Constantinople, and later Istanbul. Byzantium was colonized by the Greeks from Megara in c. 657 BC.

It was mainly a trading city due to its location at the Black Sea's only entrance. Byzantium later conquered Chalcedon, across the Bosporus on the Asiatic side.

The location of Byzantium attracted Roman Emperor Constantine I who, in 330 AD, refounded it as an imperial residence inspired by Rome itself. After his death the city was called Constantinople (Greek Κωνσταντινούπολις, Konstantinoupolis, "city of Constantine").

On May 29, 1453, the city fell to the Ottoman Turks, and again became the capital of a powerful state, the Ottoman Empire. The Turks called the city "Istanbul" - the name derives from "eis-tin-polin" (Greek: "to-the-city").

Modern location: Istanbul, Turkey

(1) 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) /...
(2) 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
(3) Aelia Flaccilla 383-386 AD
Obverse: diademed and draped bust right; AEL FLAC_CILLA AVG
Reverse: Victory seated right, inscribing christogram on shield set on cippus; SALVS REI_PVBLICAE / CONΓ
Ref: RIC IX Constantinople 61.2, LRBC II...
(4) Anastasius I 491-518 AD
Obverse:
Reverse:
Ref: None provided
(5) Anastasius I 491-498 AD
Obverse: draped, diademed bust right; (illegible letters)
Reverse: Monogram of Anastasius
Ref: BMC 32:128, Wroth 26
(6) Anonymous 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)
(7) 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
(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) Byzantion 387-340 BC
Obverse: forepart of cow left, below dolphin swimming left; (BY)
Reverse: wide ornamented trident
Ref: Schönert-Geiss Byzantion 778; SNG B...
(10) Byzantion | Lysimachos c. 125-75 BC
Obverse: Head of the deified Alexander with Ammon's horns right
Reverse: Athena Nikephoros seated left; BAΣIΛEΩΣ / ΛYΣIMAXOY, monogram (ΠΩΛYB) to left; BY below throne, trident in exergue
Ref: Marinescu 508 (O. 211 R. 483) issue...
(11) Chalcedon | Lysimachos c. 250-100 BC
Obverse: Head of the deified Alexander with diadem and Ammon's horns right
Reverse: Athena enthroned left, holding Nike with wreath, transverse spear, resting hand on shield; BAΣIΛEΩΣ / ΛYΣIMAXOY // AΣ / KAΛXA
Ref: Marinescu 115 (O. 44 R. 104) issue ...
(12) Constantine VIII 1025-1028
Obverse: + ЄMMΛ-HOVHΛ, barred IC XC across field, nimbate bust of Christ facing, holding Gospels
Reverse: + IhSЧS/XRISTЧS/bASILЄЧ/bASILЄ· in four lines across field; above and below; ornate As.
Ref: DOC class A2; SB 1818
(13) Constantius Gallus AD 353-354
Obverse: D N FL CL CONSTANTIVS NOB CAES, bare-headed, draped, and cuirassed bust right
Reverse: FEL TEMP REPARATIO, soldier rushing left holding shield on left arm and spearing a fallen horseman whose mount has stumbled beneath him, shield on ground to right, • left
Ref: Sear 19018
(14) 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.
(15) Constantius II 348-351 A.D.
Obverse: DN CONSTANTIVS PF AVG, Pearl diademed, draped, cuirassed bust, right.
Reverse: FEL TEMP REPARATIO, Phoenix, radiate, standing right on globe.
Ref: RIC VIII Constantinople 93 var (off...
(16) 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
(17) Constantius II 355-361 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N CONSTANTIVS P F AVG
Reverse: soldier spearing falling horseman (phrygian helmet); FEL TEMP R_EPARATIO / · / CONS{Z,I}
Ref: Constantinople 121 unlisted
(18) 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...
(19) Constantius II 355-361 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N CONSTAN_TIVS P F AVG
Reverse: soldier spearing falling horseman (phrygian helmet); FEL TEMP RE_PARATIO / · / CONSZ
Ref: Constantinople 121
(20) 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
(21) Constantius II 351-355 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N CONSTAN_TIVS P F AVG
Reverse: soldier spearing falling horseman (phrygian helmet); FEL TEMP RE_PARATIO / ·S· _ * / CONSA
Ref: Constantinople 116
(22) Constantius II 348-350 AD
AE Quarter Maiorina Constantinopolis
Obverse: pearl-didemed, draped and cuirassed bust right; D N CONSTAN_TIVS P F AVG
Reverse: phoenix on globe right; FEL TEMP REPARATIO / CONS?
Ref: RIC VIII Constantinople 93
(23) Helena 337-340 AD
Obverse: FL IVL HELENAE AVG, draped bust of Helena right, her hair elaborately dressed
Reverse: PAX PVBLICA, Pax standing left holding olive branch
Ref: Sear 17498
(24) 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
(25) Jovian AD 363-364
Obverse: DN IOVIANVS PF AVG, Diademed, draped, and cuirassed bust left
Reverse: VOT/ V/ MVLT/ X in four lines within wreath
Ref: RIC VIII 179, Sear 19232
(26) Julia Domna 193-217 AD
AE unit Byzantion
Obverse: IOVΛIA AVΓOVCTA, Bust of Julia facing right, wearing diadem and drapery
Reverse: BVZANTIΩN, Athena standing facing, head left, holding shield and inverted spear
Ref: Varbanov 1743
(27) Julian II 361-363 AD
AE Double Maiorina Constantinopolis
Obverse: pearl-diademed draped and cuirassed bust right; DN FL CL IVLI_ANVS PF AVG
Reverse: Bull right, 2 stars above; SECVRITAS REIPVB· / ·CONSPA(branch)
Ref: RIC VIII Constantinople 162
(28) Justin II Jan. 566 AD
Obverse: D N I - VST - INVS PP AVI, Helmeted bust facing, holding Victory on globe and shield.
Reverse: VICTORI - A AVGGG ? (officina 4) around, CONOB in exergue, Constantinipolis seated facing, head r., holding spear and cross on globe.
Ref: Berk-59, Hahn-4, Sear-344.
(29) Justinian I 539-540 AD
Obverse: DN IVSTINIANVS PP AVG, Bust of Justinian wearing helmet and cuirass, facing holding cross on globe and shield; cross to right
Reverse: Large M, ANNO to left, cross above, regnal year (XIII) to right, officina letter (ϵ) below; CON in exergue
Ref: SB 163
(30) Leo I 462-466 AD
Obverse: diademed, helmeted and cuirassed 3/4 facing bust, spear over shoulder; D N LEO PE_RPET AVG
Reverse: Victory standing left with long cross; VICTORI_A AVGGG B / * / CON OB
Ref: RIC X 605, DOC 528
(31) Leo VI 886-912
Obverse: +LЄOҺ bAS-ILЄVS Rom. Crowned and draped bust facing, holding akakia.
Reverse: +LЄOҺ/ЄҺ ӨЄO ЬA/SILЄVS R/OmЄOҺ in four lines.
Ref: DOC 8; SB 1729
(32) Leo VI 886-912
Obverse: +LEON bAS-ILEVS ROM, crowned bust facing with short beard, wearing chlamys, holding akakia
Reverse: +LEOh Eh ΘEO bA-SILEVS R-OMEOh, legend in four lines.
Ref: Sear 1729; DOC 8
(33) Maurice Tiberius 590-602 AD
Obverse: DN mAVRC TIb PP AVG, Bust of Maurice facing, wearing plumed helmet, and cuirass, holding cross on globe
Reverse: VICTORIA AVGGI, Angel standing facing, holding long P-headed cross, and cross on globe; CONOB in exergue
Ref: SB 478
(34) Maurice Tiberius 593 AD
Obverse: D N MAVR TIBER PP AV. Helmeted and cuirassed bust facing, holding globus cruciger and shield.
Reverse: Large mark of value K; ANNO to left, cross above, X/I to right, A in exergue.
Ref: SBV 497; DOC 56a
(35) Phocas 602-610 AD
Obverse: Crowned, draped and cuirassed bust facing, holding globus cruciger.
Reverse: Angel standing facing, holding globus cruciger and long staff surmounted by staurogram; I//CONOB.
Ref: MIBE 9; DOC 10j; S. 620.
(36) 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
(37) Theodosius II AD 406-408
Obverse: DN THEODOSIVS PF AVG
Reverse: GLORIA ROMANORVM, Aracadius & Honorius standing on either side of a shorter Theodosius II, looking towards each other and holding spear and shields, the younger looking forward and holding spear and globe
Ref: Sear 21193
(38) 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