The Litra denomination
A small silver and bronze coin used in the colonies of Ancient Greece in general, and in ancient Sicily in particular.

In silver it weighed 0.87 g (0.031 oz) and was equal to one-fifth of a drachma - almost the same weight as an obol.
Litra

(1) Dionysios I After 410 BC
Obverse: Head of Athena left, wearing Corinthian helmet with olive wreath; dolphin before and behind
Reverse: Hippocamp left; reins trailing.
Ref: Calciati 44
(2) Dionysios I After 410 BC
Obverse: Head of Athena left, wearing Corinthian helmet with olive wreath
Reverse: Hippocamp left
Ref: Calciati 44
(3) Syracuse | Dionysios I 405-367 BC
Obverse: helmeted head of Athena left; ΣYPA
Reverse: Hippocamp left
Ref: Calciati vol. II, p. 89, 45