A litra was a small silver coin used in the Archaic-era and early Classical colonies of ancient Greece in general and in ancient Sicily in particular. As a coin, the litra was similar in value to the obol. In silver content, the coin weighed 0.87 g (0.031 oz) and was equal to one-fifth of a drachma. As a unit of weight, the litra was one-third of a Roman libra, i.e. 109.15 g (3.850 oz).