Denomination: 20 Nummia, Bronze
Description: Justin II, AE Half Follis, Year 3 (567/568), Thessalonica. D N IVSTINVS P P AVG, Helmeted, cuirassed bust facing, holding Victory on globe and shield / Large K, ANNO to left, cross above, X, IIII to right. mint mark
Nummus (Greek: νουμμίον, noummion) is a Latin term meaning "coin", but used technically for a range of copper coins issued by the Roman and Byzantine empires during Late Antiquity.
This coin was minted in bronze throughout the Byzantine Empire in wide variety. The “K” stands for the coin’s value, which is 20 nummia (equal to half a follis). The word “ANNO” that is written to the left of the “K” means “year” and the Roman numerals to the right of the “K” was the reigning year of the emperor who is depicted on the reverse side of the coin.
