The Ancient Roman Coin term is composed of two solutions: Sesterce (8 letters) and DENARIUS (8 letters). The Sesterce was a large silver coin used in Ancient Rome from the 3rd century BC to the 3rd century AD. It was the most common denomination of Roman currency and was worth one quarter of a DENARIUS. The DENARIUS was a small silver coin used in Ancient Rome from 211 BC to the 3rd century AD. It was the most common denomination of Roman currency and was worth four Sesterces.