The Chalkous denomination
The chalkous (plural: chalkoi) was an ancient Greek bronze coin denomination. The chalkous was the smallest fraction of a coin in Greek poleis, but the weight varied. In Athens one obolos equalled 8 , in Delphi and Epidaurus 12 , and in Priene 16 chalkoi.

Other denominations based on the Chalkous were struck, e.g. the tetrachalkon, the dichalkon, and the hemichalkon.
Chalkous
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An AE Chalkous struck 369-359 BC in Pherai
Obverse: forepart of butting bull right

Reverse: forepart of horse right; AΛEΞAN / ΔPOY

Diameter: -
Die Orientation: -
Weight: 2.4 g
No notes for this coin
BCD Thessaly II 708.2; HGC 4, 584
(2) Mygissos
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An AE Chalkous struck 350-300 BC in Mygissos
Obverse: laureate head of Poseidon right

Reverse: dolphin right, trident below; MY

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
SNG Kayhan 857 (Myous); SNG Cop. 1022 (Var., Myous); SNG München 335. R!
(3) Pelinna
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An AE Chalkous struck c. 425-350 BC in Pelinna
Obverse: Horseman left, striking at fallen Hoplite with javelin

Reverse: Warrior advancing left, holding shield ΠEΛINNA_ION

Diameter: -
Die Orientation: -
Weight: 3 g
No notes for this coin
Rogers 427; BCD Thessaly 520; SNG Copenhagen 186-7 var