Tremissis

The tremissis or tremis (Greek: τριμίσιον, trimision) was a small pure gold coin of Late Antiquity.

It was introduced into Roman currency in the 380s by the Emperor Theodosius I and initially weighed 8 siliquae (equivalent to 1.52 grams).

[1] Outside of the Roman empire, tremisses were minted by the Anglo-Saxons, Burgundians, Franks, Frisians, Lombards, Ostrogoths, Suevi and Visigoths between the 5th and 8th centuries.

[3] In Frankish sources, the tremissis is sometimes called a triens, a term likewise meaning "a third", which originally referred to a bronze coin worth a third of an as.

The historian and bishop Gregory of Tours calls the Frankish tremissis a trians or treans.