Coins from Troas
Troas is the historical name of the Biga Yarimadasi peninsula in the northwestern Turkey. Bounded by the Dardanelles to the northwest, by the Aegean Sea to the west and separated from the rest of Anatolia by the massif that forms Mount Ida, the Troad is drained by two main rivers, the Scamander (Karamenderes) and the Simois, which join near the ruins of Troy.

The Kingdom of Pergamum ceded the territory to the Roman Republic.
Troas
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An AE unit struck 400-200 BC in Abydos (Troas)
Obverse: laureate head of Apollo right

Reverse: eagle left; ABY

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
SNG von Aulock 1446; cf. SNG Copenhagen 36
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An AR Obol struck 480-450 BC in Abydos (Troas)
Obverse: eagle left, star above; ABY

Reverse: facing head of Medusa within incuse square

Diameter: -
Die Orientation: -
Weight: 0.5 g
No notes for this coin
SNG Copenhagen 5; BMC 4-5
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An AE unit struck c. AD 253-268 in Alexandria Troas
Obverse: CO TRO AV, draped and turreted bust of Tyche right; vexillum inscribed COL at shoulder

Reverse: COL AVG, horse grazing right; TRO in exergue

Diameter: 20 mm
Die Orientation: 1 H
Weight: 5.47 g

A pseudo-autonomous issue struck during the reign of Gallienus

Bellinger A486 var.
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An AE unit struck c. AD 253-268 in Alexandria Troas
Obverse: ALEX TRO, draped and turreted bust of Tyche right; vexillum inscribed CO/AV at shoulder

Reverse: COL AVG TRO, eagle, wings spread, standing right on head of bull

Diameter: 21 mm
Die Orientation: 11 H
Weight: 5.69 g
No notes for this coin
Bellinger A490; SNG Copenhagen 114
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An AE AE20 struck c. AD 253-268 in Alexandria Troas
Obverse: ALEXA TRO, turreted and draped bust of Tyche right; vexillum behind

Reverse: COL AVG, she-wolf standing right, suckling the twins Romulus and Remus; TRO in exergue

Diameter: 19 mm
Die Orientation: 6 H
Weight: 4.88 g
No notes for this coin
Bellinger A495
(6) Antandros
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An AR Diobol struck c. 425-400 BC in Antandros
Obverse: female head right (Artemis Astyrene?)

Reverse: lion head right within incuse square; ANTAN

Diameter: -
Die Orientation: -
Weight: 1 g
No notes for this coin
Cf. SNG von Aulock 7582 (later type without incuse); SNG München -; SNG Ashmolean -; cf. SNG Tübingen 2555 (same); cf. Klein 298 (same); Traité II -; CNG E-369, lot 113; Gitbud & Naumann 24, lot 170.
(7) Assos
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An AE unit struck 400-300 BC in Assos
Obverse: Helmeted head of Athena right

Reverse: ΑΣΣΙ, Griffin seated left.

Diameter: 17 mm
Die Orientation: 0 H
Weight: 3.54 g
No notes for this coin
SNG München 157
(8) Assos
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An AR Obol struck c. 479-450 BC in Assos
Obverse: gryffin right

Reverse: lion head right

Diameter: -
Die Orientation: -
Weight: 0.3 g
No notes for this coin
BMC Troas p. 36, 3; Weber 5318; SGCV II 4044; Klein - ; Rosen -; SNGvA -; SNG Cop -,
(9) Birytis
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An AE unit struck c. 4th Cent. BC in Birytis
Obverse: Beardless head of Kabeiros facing left, wearing pilos, star at left and right

Reverse: B-I-P-Y surrounding club, all within laurel wreath

Diameter: 19 mm
Die Orientation: 4 H
Weight: 5.37 g
BIPY are the first four letters of the city name in greek (P=R)
Sear 4056
(10) Birytis
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An AE unit struck 350-250 BC in Birytis
Obverse: Head of Kabeiros left, wearing conical helmet; two stars above.

Reverse: B I / P Y, Club within wreath.

Diameter: 18 mm
Die Orientation: 6 H
Weight: 5.48 g
Pecunem 38-226
SNG von Aulock 1502-3; SNG München 168
(11) Birytis
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An AE unit struck 350-250 BC in Birytis
Obverse: head of Kabeiros left wearing pileus

Reverse: club within wreath; B_I / P_Y

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
SNG Cop 249; SNG Munchen 19, 170; SNG Tub 2574; BMC Troas p. 40, 6 - 7; SNGvA -
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An AE unit struck 211-217 AD in Alexandria Troas
Obverse: laureate, cuirassed bust right, head of Medusa on cuirass; AV.M AV__ANTONIN

Reverse: Apollo left leaning foot on pedestal, holding branch; COL A_LEXA AVG

Diameter: -
Die Orientation: -
Weight: 6.7 g
ex Gorny & Mosch
Bellinger, Troy Vgl. A 298; SNG v. Aul. Vgl. 7559.
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An AE unit struck 211-217 AD in Alexandria Troas
Obverse: ANTONINVS PIVS AV, Head of Caracalla facing right, wearing laurel wreath

Reverse: ? ALEXAN ?, Horse grazing facing right, COL in exergue?

Diameter: 22 mm
Die Orientation: 12 H
Weight: 4.43 g
Troas, Alexandria mint

The closest I could come to matching this up was by looking at sold examples, the type matches with " Bellinger A283", but the inscriptions on my coin are quite different on both sides.
Bellinger A283 var. (obv. and rev. insc.)
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An AE 22 struck AD 253-260 in Alexandria Troas
Obverse: IMP LICIN GALLIENVS, laureate, draped and cuirassed bust right

Reverse: COL AVG, horse grazing right; TRO in exergue

Diameter: 20 mm
Die Orientation: 5 H
Weight: 5.49 g
No notes for this coin
Bellinger A451
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An AE unit struck 253-260 AD in Alexandria Troas
Obverse: laureate, draped and cuirassed bust left from behind; IMP LICIN GALLIENVS

Reverse: grazing horse right; COL AVG / TRO

Diameter: 23 mm
Die Orientation: -
Weight: 9.9 g
No notes for this coin
Bellinger A451
(16) Gargara
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An AE unit struck ~400 BC in Gargara
Obverse: Laureate head of Apollo left

Reverse: ΓAP. Head of ram right within incuse circle

Diameter: 7 mm
Die Orientation: -
Weight: 0.49 g
No notes for this coin
SNG von Aulock -; SNG Copenhagen -; Künker 133, lot 7509
(17) Kebren
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An AR Obol struck c. 500-400 BC in Kebren
Obverse: head of Apollo left

Reverse: ram head left within incuse square

Diameter: -
Die Orientation: -
Weight: 0.6 g
No notes for this coin
SNG Ashmolean 1086 (diobol); SNGvA 1546 (same), Rosen 534 (same), SNG Cop -, SNG Munchen -, BMC Troas -
(18) Kolone
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An AR Hemiobol struck 500-300 BC in Kolone
Obverse: head of Athena right wearing Corinthian helmet

Reverse: star ornament within incuse square

Diameter: -
Die Orientation: -
Weight: 0.4 g
No notes for this coin
Cf. Gorny & Mosch 176, 1246; Peus 407, 2012, 485; Auktion Hauck & Aufhäuser 15, 2000, Nr.96 f; Naumann 8/134; SNG Kayhan II vgl. 1583
(19) Neandreia
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An AR Obol struck c. 410-370 BC in Neandreia
Obverse: laureate head of Apollo right

Reverse: ram right; NEA / N

Diameter: -
Die Orientation: -
Weight: 0.4 g
No notes for this coin
SNG Cop 446; SNGvA 7628; SNG Munchen 293; SNG Kayhan 77; SNG Ashmolean 1170; Klein 318
(20) Ophrynion
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An AE unit struck 350-300 BC in Ophrynion
Obverse: bearded head of Hector facing slightly right wearing triple crested helmet

Reverse: infant Dionysos right holdig bunch of grape; OΦPY

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
SNG Cop 456; SNGvA 1559; SNG München 299, BMC Troas p. 75, 4
(21) Sigeion
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An AE unit struck c. 355-334 BC in Sigeion
Obverse: head of Athena facing slightly right, waering triple-crested helmet

Reverse: owl standing right, crescent left; ΣIΓE

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
BMC Troas p. 86, 7 ff.; SNG München 311; SNG Cop 496 ff.; SNGvA 7637
(22) Skepsis
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An AE unit struck c. 350-306 BC in Skepsis
Obverse: rhyton (ornate drinking vessel) in the shape of Pegasos forepart left

Reverse: fir-tree within rectangle; Σ_K

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
SNG München 329; SNG von Aulock -; SNG Copenhagen 477; BMC 14