The Hemilitron denomination - Variants: Half-Litra
The Hemilitron was an ancient Greek denomination in the Sicilian Litra system corresponding to half a Litra - or six onkia. It was struck in both bronze and silver, and is typically characterized by six pellets on the reverse design.

Some Roman republican bronzes are also referred to as hemilitrons - what they were known as historically is unknown.
Hemilitron|Half-Litra

(1) Hieron II 230-218/5 BC
Obverse: Diademed head left
Reverse: Warrior on horse prancing right, holding couched lance; ΣΛ below
Ref: CNS 195; cf. SNG ANS 956
(2) Himera 420-409 BC
Obverse: head of nymph left; •••••• / IM_E
Reverse: wreath, 6 • inside
Ref: SNG Cop 320; Calciati I p. 43, 35; ...
(3) Syracuse 410-405 BC
Obverse: Head of Arethusa left, wearing necklace
Reverse: Star of (8 or 16) rays in circular incuse within quadripartite incuse square
Ref: SNG ANS 398-402 or SNG ANS 394-7 va...
(4) Syracuse | Agathocles 317-289 BC
Obverse: Head of Kore left wreathed with grain, amthora ?; ΣΥΡAKOΣIΩN
Reverse: Bull butting left, dolphin above and below; (NK)
Ref: cf. Calciati II p. 218, 96 DS 114 R...
(5) Timoleon 344 - 336 BC
Obverse: ZEYΣ EΛEΘEΡIOΣ / Laureate head of Zeus Eleutherios right
Reverse: ΣYPAKOΣIΩN / Upright thunderbolt
Ref: None provided