Obviously thinking about parallels to Roman or otherwise aes grave.
There also silver fractions with five pellets usually dated to the early 5th century
also has cast bronze denominations with 1, 2, 3, 4 pellets. 6 pellets are known in struck coinage.
The “Onkia” doesn’t have a denomination mark, but it’s fab design is clearly intended to flag its place in the denomination system:
2 – pellet:
Struck variations also exist:
3-pellet typically dated 420-405 BCE seems most common
1-pellets are also known
Base-12 system, six-pellet, three pellet seem most common, some four pellets
3-pellet and 1-pellet seem most common, assume this means a base-12 system too
3-pellet and 1-pellet seem most common, again I assume this means a base-12 system
Some mints producing struck Hemilitrons with pellets
Lipara, Syracuse (many AR with four spoked wheel), Akragas, Piakos, Mytistratos (mid 4th cent?), Panormos (fine rooster! and some with Punic script), Himera, Mamar, Solus (Solos, Soloi), Kamarina (?), Naxos (also silver version), Entella, Leontini, Kentoripai
Some Bibliography on Denomination systems
La valeur des monnaies grecques en bronze / Olivier Picard. Revue Numismatique Vol. 153, 1998, p. -18.