The Tetras denomination
The Tetras was a bronze denomination within the Sicilian Greek system corresponding to 4 onkia - or one third of a Litra.

The tetras was denoted by four pellets on the reverse.
Tetras
(1) Agyrion
/Files/Images/Coinsite/CoinDB/1533_Agyrion.jpg
An AE Tetras struck 339/338-317 BC in Agyrion
Obverse: crude head of Ares or Athena right wearing crested Attic helmet

Reverse: club; AΓYPI / NAIΩN

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
Campana 11; CNS III, 20 OS; SNG ANS -; HGC 2, 54
(2) Akragas
/Files/Images/Coinsite/CoinDB/634_Akragas_tetrasx.jpg
An AE Tetras struck 425-406 BC in Akragas
Obverse: eagle right, tearing at hare AKP_A

Reverse: Crab, crayfish left below •••

Diameter: -
Die Orientation: -
Weight: 9.21 g
No notes for this coin
SNG COP. 75 var. SNG München 132