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In the context of the Roman Empire, “falus” is often associated with the Falsus or Follis, a bronze coin denomination that was primarily used during the later Roman Empire. These coins were typically larger and heavier than the smaller denominations and were characterized by their bronze composition and relatively low value.

The Falsus/Follis coins featured various Roman emperors and their associated symbols and inscriptions. They played a role in the Roman monetary system and were used for everyday transactions, although their value had significantly declined compared to earlier, more valuable Roman coinage.