16 Nummi - Justinian I Thessalonica, Type ☧

Justinian I's reign saw the follis system reorganized under the currency reform of 538 AD, which rationalized fractional denominations across the eastern mints. Thessalonica operated as a secondary mint to Constantinople, its output distinguishable by mint mark and generally lower in volume than the capital's production. The 16 nummi — equivalent to a quarter follis — occupied the lowest practical tier of everyday bronze exchange.