Ancient Rome Bronze As Numismatic Guide

Illustrated Specimen Details: Bronze As

Example Specimen: As, 41-54 (Roman Empire)

Authority & Heraldry: Issued under Emperor Tiberius Claudius Caesar Augustus Germanicus, the first Roman emperor born outside Italy. The obverse features the portrait of the Emperor in a laurel wreath, with the legend IMP TI CLA CAE AV GER (Imperator Tiberius Claudius Caesar Augustus Germanicus), though it is largely lost or obliterated on this specific specimen. The reverse prominently displays S C (Senatus Consultum – "Decision of the Senate") within a wreath. This mark was legally required on base-metal (copper or bronze) coins to confirm that their value corresponded to the specified denomination by special decree of the Senate.

1. ANCIENT ROME (3rd century BC-3rd century AD) — ROMAN REPUBLIC + ROMAN EMPIRE + ROMAN PROVINCES: as = 1/2 dupondius = 1/4 sestertius = 1/5 quinarius = 1/10 denarius

The name of the as coin comes from the ancient Latin terms "Aes Signatum" (stamped bronze) or "Aes Grave" (heavy bronze), where the word "Aes" translates to "bronze". Initially, these phrases were used directly in monetary circulation. Over time, as massive bronze ingots and unprecedentedly large cast bronze coins were replaced by round, standard-sized struck coins, the shortened name — as (plural asses) — remained in common use.

History and Evolution of the Roman As

The as was the fundamental bronze denomination of the monetary system in Ancient Rome. It was issued throughout the era of the Roman Kingdom (originally in the form of a proto-currency known as Aes Rude), the Roman Republic, and the Roman Empire, undergoing massive transformations in physical size, weight, and economic value over the centuries.

From Bronze Ingots to Round Coins

Since ancient times, the Romans utilized bronze for trade and commodity relations. Initially, these were irregular bronze ingots. During the reign of Servius Tullius in the middle of the 6th century BC, these ingots were standardized into rectangular shapes weighing over 1 kilogram, stamped with the image of a bull to symbolize parity with the animal's value. This proto-currency was known as Aes Signatum.

Because these bulky ingots were highly inconvenient for daily commerce, the 4th century BC saw the introduction of the first round Roman coin, the Aes Grave (heavy bronze). It weighed a Roman pound of bronze (approximately 327.45 grams) and typically featured the portrait of the two-faced god Janus. The concept of round, standardized coins adorned with deities was likely influenced by ancient Greek numismatic traditions. During the later Imperial period, the imagery shifted from deities to portraits of the emperors themselves.

Fractional System and Debasement

Over time, the weight of the as was drastically reduced. A complex fractional system developed alongside it to facilitate small trade:

• one-twelfth of an as = uncia

• one-sixth of an as = sextans

• one-quarter of an as = quadrans

• one-third of an as = triens

• one-half of an as = semis

In the classical Augustan standard of the early Roman Empire, the base coin system stabilized as follows:

• 16 asses = 1 silver denarius

• 4 asses = 1 sestertius

• 2 asses = 1 dupondius

Economic Role and Legacy

The as was the workhorse of the Roman economy. While silver denarii dominated larger transactions, the bronze as formed the backbone of daily commerce for ordinary citizens across the empire, used to buy food, small goods, and pay minor wages or taxes.

As centuries passed, continuous inflation, currency reforms, and debasement reduced the practical value and size of the as. By the later Imperial period, it had transformed from a heavy, stable economic standard into a largely symbolic fractional unit.