The Obol denomination
The Obol was a form of ancient Greek currency and weight. Originally a small metal spit, six obols constituted a Drachm - a 'handful'.

Depending on the standard used, and obol weighed between 0.44 grams (Achaean) and 0,72 grams (Attic).
Obol
(1) Abdera
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An AR Obol struck 473-448 BC in Abdera
Obverse: seated griffin left rising leg

Reverse: quadripartite incuse square

Diameter: -
Die Orientation: -
Weight: 0.5 g
No notes for this coin
May 191; SNG Cop. 312 ff.
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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
/Files/Images/Coinsite/CoinDB/Alwxander_III_obol.jpg
An AR Obol struck 325-300? BC in an unknown location
Obverse: Head of young Herakles right, wearing lion's skin

Reverse: Zeus seated left, leaning on scepter, holding eagle AΛEΞANΔPOY

Diameter: -
Die Orientation: -
Weight: 0.55 g
No notes for this coin
No references provided for this coin
(4) Aspendos
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An AR Obol struck c. 465-430 BC in Aspendos
Obverse: Amphora

Reverse: triskeles, pellet; E_Σ

Diameter: -
Die Orientation: -
Weight: 0.8 g
No notes for this coin
SNG France 14; SNG von Aulock 4485; Traité II 1545
(5) 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 -,
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An AR Obol struck 411-373 BC in Salamis (Cyprus)
Obverse: Bare head of young male facing right (Evagoras?)

Reverse: Smooth, no design

Diameter: 10 mm
Die Orientation: 0 H
Weight: 0.79 g

Kingdom of Salamis

BMC 45; Tziambazis 116
(7) 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 -
(8) Kos
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An AR Obol struck 500-480 BC in Kos
Obverse: crab

Reverse: quadripartite incuse square

Diameter: -
Die Orientation: -
Weight: 0.5 g
No notes for this coin
SNG Copenhagen 615-6 (diobols); HGC 6, 1297; BMC 5; SNG Kayhan 903.
(9) Laranda
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An AR Obol struck Circa 324-323 BC in Laranda
Obverse: Baaltars seated left holding long scepter, bunch of grapes and ear of grain

Reverse: Forepart of wolf right; inverted crescent above; all within circle of pellets.

Diameter: 9 mm
Die Orientation: 0 H
Weight: 0.6 g

Formerly attributed to an unknown Cilician mint

Göktürk 82; SNG France 443
(10) Laranda
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An AR Obol struck c. 400-300 BC in Laranda
Obverse: Baal seated left, stalk of grain and bunch of grapes in right hand, long scepter vertical behind in left hand

Reverse: wolf forepart right, crescent above

Diameter: -
Die Orientation: -
Weight: 0.5 g
No notes for this coin
SNG BnF 450 (uncertain Cilicia), SNG Levante 225 (uncertain Cilicia)
(11) Miletos
/Files/Images/Coinsite/CoinDB/Milet_-_obol_1(0).jpg
An AR Obol struck 520-500 BC in Miletos
Obverse: head of lion left

Reverse: star ornament within incuse square

Diameter: -
Die Orientation: -
Weight: 1.07 g
No notes for this coin
Pfeiler, 6; SNG von Aulock 2080; BMC 12; SNG Delepierre 2644; SNG Cop. 948
(12) Miletos
/Files/Images/Coinsite/CoinDB/584_Miletos.JPG
An AR Obol struck 520-500 BC in Miletos
Obverse: head of lion left

Reverse: star ornament within incuse square

Diameter: -
Die Orientation: -
Weight: 1.06 g
No notes for this coin
Grose 8210, SNGvA 2081, SNG Cop 944v, BMC 186, Sear #3533
(13) 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
(14) Pharkadon
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An AR Obol struck 480 - 400 BC in Pharkadon
Obverse: Horse prancing right

Reverse: ΦΑΡ-ΚΑΔO, Athena standing right, holding spear and shield; all within incuse square.

Diameter: 12 mm
Die Orientation: 6 H
Weight: 0.87 g
From the BCD Collection Minor porosity
BCD Thessaly I 1271 var. (ethnic), BCD Thessaly II 606 var. (arrangement of ethnic); HGC 4, 297
(15) Selge
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An AR Obol struck 350-300 BC in Selge
Obverse: Facing gorgoneion

Reverse: Helmeted head of Athena right; astralagos behind

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
SNG France 1934
(16) Selge
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An AR Obol struck 250-190 BC in Selge
Obverse: Facing gorgoneion

Reverse: Helmeted head of Athena right within incuse square

Diameter: 11 mm
Die Orientation: -
Weight: 0.93 g
No notes for this coin
SNG von Aulock 5242
(17) Selge
/Files/Images/Coinsite/CoinDB/Selge_obol.jpg
An AR Obol struck c. 350-300 BC in Selge
Obverse: facing head of Medusa (Gorgoneion), tongue protruding

Reverse: head of Athena leftwearing crested helmet; astragalos behind

Diameter: -
Die Orientation: -
Weight: 0.9 g
No notes for this coin
SNG BnF 1928; SNGvA 5281; BMC Lycia p. 257, 4; Klein 631; SNG Cop -
(18) Side
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An AR Obol struck c. 400-300 BC in Side
Obverse: lion head right

Reverse: helmeted head of Athena right

Diameter: -
Die Orientation: -
Weight: 0.7 g
No notes for this coin
Atlan, Side 77 (dies Exemplar); SNG BN 738; SNG von Aulock 4774
(19) Tanagra
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An AR Obol struck 387-374 BC in Tanagra
Obverse: boeotian shield

Reverse: forepart of horse right; TA

Diameter: -
Die Orientation: -
Weight: 0.9 g
No notes for this coin
BCD Boiotia 280; SNG Copenhagen 231