The Tremissis denomination
The tremissis or tremis was a small solid gold coin of Late Antiquity.

Its name, meaning "a third of a unit", formed by analogy with semissis (half of a unit), indicated its value relative to the solidus.

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