The Tetartemorion denomination
A tetartemorion is an ancient Greek denomination worth 1/4 obols, and weighing 0.18 grammes.

The name comes from 'tetarton', meaning a fourth, and 'morion' meaning part - a "quarter-part".
Tetartemorion
(1) Caria | Mylasa?
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An AR Tetartemorion struck 420-390 BC in Mylasa?
Obverse: forepart of lion right

Reverse: pigeon left, pellet above and below

Diameter: 6 mm
Die Orientation: -
Weight: 0.25 g
No notes for this coin
SNG Kayhan 947
Greek (City Coinage)
(2) Cilicia | Tarsos?
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An AR Tetartemorion struck 400-350 BC in Tarsos?
Obverse: king with bow and dagger right

Reverse: head of Hermes left, wearing petasos

Diameter: 4.5 mm
Die Orientation: -
Weight: 0.2 g
uncertain satrap ex Lanz 151-512, ex Pecunem 23-447
Troxell & Kagan –; SNG France –; SNG Levante –; cf. CNG EA, 295, 263., Helios Numismatik, Auktion 5, 25. Juni 2010, Nr. 110.
Eastern (Cilician Satrapy)
(3) Himera
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An AR Tetartemorion struck Before 484 BC in Himera
Obverse: Cock striding left

Reverse: Incuse square with mill-sail pattern

Diameter: -
Die Orientation: -
Weight: 0.21 g
No notes for this coin
Kraay-307 (illustrated by a broken example in Palermo), cf. SNG ANS-145
Greek (City Coinage)
(4) Kolophon
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An AR Tetartemorion struck 520-500 BC in Kolophon
Obverse: head of Apollo right

Reverse: incuse square

Diameter: 5 mm
Die Orientation: -
Weight: 0.17 g
No notes for this coin
SNG von Aulock 1810 var(head right); SNG Kayhan 352
Greek (City Coinage)
(5) Kyme
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An AR Hemiobol | Tetartemorion struck 480-450 BC in Kyme
Obverse: head of eagle left; KY

Reverse: quadripartite incuse square

Diameter: 5 mm
Die Orientation: -
Weight: 0.3 g
No notes for this coin
SNG Cop 31; Klein 333. (hemiobol)
Greek (City Coinage)
(6) Phokaia | Teos
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An AR Tetartemorion struck 521-478 BC in Phokaia | Teos
Obverse: head of griffin left

Reverse: incuse square

Diameter: 6 mm
Die Orientation: -
Weight: 0.28 g
No notes for this coin
Cf. Hirsch 221, lot 331, BMC 88-89
Greek (City Coinage)
(7) Teos
/Files/Images/Coinsite/CoinDB/Teos_hemiobol.jpg
An AR Tetartemorion struck 475-450 BC in Teos
Obverse: seated griffin right, rising leg

Reverse: quadrate incuse square

Diameter: 8.5 mm
Die Orientation: -
Weight: 0.29 g
No notes for this coin
SNG Kayhan 601
Greek (City Coinage)