
The tetarteron (, "quarter [coin]") was a Byzantine term applied to two different coins, one gold circulating from the 960s to 1092 in parallel to the histamenon, and one copper used from 1092 to the second half of the 13th century.
The tetarteron (, "quarter [coin]") was a Byzantine term applied to two different coins, one gold circulating from the 960s to 1092 in parallel to the histamenon, and one copper used from 1092 to the second half of the 13th century.
==Gold coin== thumb|right|250px|Gold tetarteron of the sole rule of Empress Theodora (11th century)|Theodora (r. 1055–1056).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).