Roman Follis (AE3)

The Roman follis of the AE3 module is a small base-metal coin struck in the early fourth century, during and around the reign of Constantine I (the Great). By this period the follis, once a large coin of nearly 30 mm, had been repeatedly reduced in size and now survives as a compact bronze piece in the range modern collectors label AE3. The example described here dates to roughly AD 320-330.

The obverse shows the profile bust of an emperor facing right, in the tightly modelled Constantinian style, surrounded by a Latin legend naming the ruler and his titles. The reverse carries a commemorative design, in this case a Victory or a vota inscription set within a laurel wreath, celebrating imperial vows, victories, or the well-being of the state. These reverses were meant to broadcast the confidence and legitimacy of the Constantinian dynasty.

Struck in enormous numbers at mints across the empire, these small folles are among the most abundant of all ancient Roman coins and are a common and affordable entry point for collectors of the late Roman period.

The follis was introduced around AD 294 as part of the coinage reform of the emperor Diocletian, originally as a substantial silvered bronze coin. Over the following decades successive reductions in weight and size shrank it dramatically, so that by the 320s it was the small AE3-module bronze seen here. The trace of silver in the alloy had also all but disappeared, leaving an essentially bronze coin.

Constantine I ruled from AD 306 until his death in 337, first as one of several rival emperors and, after defeating Licinius in AD 324, as sole ruler of a reunited empire. His reign transformed the Roman world: he founded Constantinople, extended official tolerance to Christianity, and reorganised the coinage and administration. The bronze folles of the 320s were struck against this backdrop of consolidation and dynastic promotion, often naming Constantine alongside his sons the Caesars.

The commemorative reverses of the period, including Victory types and vota inscriptions marking anniversaries of imperial vows, were part of a coordinated message of stability and triumph issued across many mints. Their vast output means these coins turn up in large quantities today, giving modern collectors a direct and inexpensive link to the age of Constantine.

Start with the obverse. The coin shows the profile bust of an emperor facing right in the compact, hard-edged Constantinian style, usually laureate, diademed, or helmeted and often cuirassed, with a Latin legend running around the edge. The legend names the ruler and his titles, for example CONSTANTINVS AVG or a variant with the names of his sons the Caesars; reading this legend is the key to attributing the coin to a specific member of the dynasty.

The reverse of this piece carries a commemorative design built around a Victory or a wreath. Typical types of AD 320-330 include a vota inscription such as VOT XX or VOT XXX MVLT set within a laurel wreath, two Victories holding a shield with the legend VICTORIAE LAETAE PRINC PERP, or a single advancing Victory. Match the legend to the design to identify the exact type.

In hand the coin is roughly 17-20 mm across and light, generally around 2-3.5 grams, struck in bronze with a brown, green, or earthen patina; original silvering is normally absent by this date. Look in the reverse field and exergue for mint marks, the small letters and symbols that name the issuing mint and workshop and place the coin to a city such as Trier, Arles, Siscia, Thessalonica, Constantinople, or Antioch.

Small Constantinian folles of the AE3 module are among the most common ancient coins in the market, reflecting the huge quantities struck across the empire. Ordinary circulated examples with clear portraits and legends frequently trade for only a few dollars up to the low tens, making them a popular first ancient coin.

Value rises with condition and interest: sharply struck coins with full legends, attractive patina, complete mint marks, and well-detailed reverses bring more, and scarcer reverse types, particular mints, or coins naming less common members of the dynasty can command premiums. Well-preserved commemorative and Victory reverses are especially collectable.

The figures here are general context rather than appraisals. Condition, type, mint, and eye appeal all move an individual coin, and a specialist attribution to a specific mint and reverse variety can add interest and value for a superior example.