Postumus Billon Antoninianus RIC V Postumus 75

Monetary Context and the Gallic Currency System

The antoninianus designated as RIC V Postumus 75 emerged in the tumultuous decade following the secession of the western provinces in AD 260. Facing military catastrophe along the Rhine and the capture of Emperor Valerian in the East, the general Postumus was acclaimed emperor by his troops, establishing a regional Romano-Gallic regime covering Gaul, the Germanies, Britain, and briefly Hispania. A cornerstone of Postumus's internal legitimacy was fiscal stability. During the joint reign of Valerian and Gallienus, the central Roman antoninianus suffered catastrophic debasement, dropping from roughly twenty percent silver down toward five percent or less. In stark contrast, Postumus instituted a revived monetary policy. Gallic antoniniani produced during the first half of his reign retained an estimated silver fineness between fifteen and twenty percent, struck on broad, neat flans that averaged approximately three grams. By issuing coins of visibly superior silver alloy and solid weight, Postumus aimed to sustain military loyalty and market confidence. The selection of Moneta for RIC V Postumus 75 served as explicit monetary propaganda, asserting that the new Gallic administration presided over dependable coinage and legitimate imperial stewardship.

Production Standards and Mint Attribution

In the standard reference work Roman Imperial Coinage Volume V, Percy Webb catalogued this type under the mint of Lugdunum. Webb followed earlier nineteenth-century conventions that assigned the bulk of Gallic imperial issues to the ancient capital of the Three Gauls. However, twentieth-century numismatic research led by Georg Elmer, and later refined by Pierre Bastien and contemporary scholars, fundamentally reevaluated the geography of Gallic mints. Stylistic analysis of die engraving, hoard patterns, and administrative logic strongly support assigning Postumus's primary mint (conventionally designated Mint I) to Cologne (Colonia Claudia Ara Agrippinensium), the military headquarters on the Rhine frontier, with operations potentially shifting toward Augusta Treverorum (Trier) later in the reign. Die execution for RIC V Postumus 75 demonstrates skilled workmanship: portrait dies exhibit strong plastic relief, detailed beard rendering, and consistent letter spacing. Struck without mint marks on the reverse field or exergue, the type was manufactured on cast billon blanks that were chemically blanched prior to striking, producing an enriched silver surface over a base alloy core.

Obverse Iconography and Variations

The obverse of RIC V Postumus 75 displays a mature, heroic profile of Postumus facing right, wearing the radiate crown that designated the double-denarius or antoninianus denomination. In numismatic typology, two closely related bust truncations are recorded for this catalogue entry. The primary variant presents the emperor radiate and draped, viewed from the side or slightly from behind, with fabric folds gathered at the shoulder. The alternative variant features a radiate, draped, and cuirassed bust, where the leather or metal breastplate is visible beneath or alongside the paludamentum. The portraiture is celebrated for its naturalistic dignity, reflecting the tradition of Roman verism rather than the stylized abstraction typical of later third-century issues. Postumus is characterized by a prominent, aquiline nose, a strong brow line, and a meticulously curled, full beard that evokes Antonine models, particularly Marcus Aurelius and Septimius Severus. This conscious archaism positioned the Gallic ruler as a defender of traditional Roman virtues.

Reverse Iconography of Moneta

The reverse of the coin is devoted to Moneta, the Roman personification of minting, coinage, and honest financial administration. Moneta is portrayed as a draped female figure standing facing left. In her right hand, she extends a set of balance scales (libra), the standard instrument used to weigh bullion, verify coin standards, and administer equitable measures. Cradled in her left arm rests a cornucopiae, the horn of plenty, overflowing with fruits and grain to symbolize the material prosperity generated by a trustworthy currency. The personification is dressed in a long chiton with folds sweeping to the ground, often paired with a mantle wrapped around her lower torso. By invoking Moneta rather than the more generic Fortuna or Felicitas, the reverse conveys a targeted claim of fiscal rectitude, informing soldiers and civilians alike that the coins issued by Postumus adhered to just weight and uncompromised value.

Inscriptions and Epigraphy

The obverse inscription reads IMP C POSTVMVS P F AVG, rendered in Latin capitals encircling the portrait. The legend expands the imperial titulature: Imperator Caesar Postumus Pius Felix Augustus. The title of Imperator designates supreme military command, Caesar Augustus denotes legitimate imperial authority, and the paired epithets Pius Felix express religious piety and divine fortune. The reverse inscription is MONETA AVG, an abbreviated form of Moneta Augusti, which translates as 'the Money of the Augustus' or 'the Imperial Minting Authority.' The lettering conforms to the disciplined imperial epigraphy of the AD 260s, featuring sharp serifs and well-proportioned characters. The absence of additional control marks, officina letters, or exergual mint signatures is typical of Postumus's early and middle coinages, where die identity was monitored internally within the workshop rather than made explicit on the coin face.

Typology and Chronological Placement

Within the typology of the Gallic Empire, RIC V Postumus 75 occupies an early to middle position in Postumus's overall sequence. While Roman Imperial Coinage broadens the general issue period across the full span of the reign from AD 260 to 269, refined hoard and stylistic chronologies provide a tighter window. In Georg Elmer's 1941 monograph, issues featuring MONETA AVG belong to the series produced between AD 261 and AD 263, during the consolidation of the Gallic frontier after the initial rebellion. Jerome Mairat's and Roger Bland's subsequent hoard analyses indicate that the Moneta type was struck primarily around AD 262 to AD 265, before the rapid silver decline that set in during Postumus's fifth consulship and final years. The type is closely affiliated with parallel issues bearing reverses such as HERC DEVSONIENSI, SALVS AVG, and VICTORIA AVG, which share identical obverse die styles and high production quality.

Circulation Patterns and Hoard Context

RIC V Postumus 75 circulated extensively across the northwestern provinces of the Roman world. Because its silver content was substantially superior to the increasingly debased radiate currency produced at Rome and Siscia, Postumus's billon coinage was actively accepted and frequently hoarded. Large deposits throughout northern Gaul, the Rhineland, and Roman Britain contain significant representation of the Moneta type. Notable deposits, including the monumental Cunetio Hoard discovered in Wiltshire in 1978 and the Normanby Hoard, demonstrate that these coins remained in active use alongside later Gallic issues of Victorinus and the Tetrici. Due to Gresham's law, many earlier, higher-grade radiates of Postumus were selectively retrieved and hoarded as emergency savings while heavily debased central issues continued circulating in local markets. Wear patterns on recovered specimens range from pristine, uncirculated condition to moderate wear, confirming that the type remained in active commercial circulation until the reconquest of the Gallic Empire by Aurelian in AD 274.

References

1. The Cunetio Treasure: Roman Coinage of the Third Century AD. British Museum Publications, London, 1983
2. The Development of the Gallic Empire: The Numismatic Evidence. Proceedings of the Eleventh International Numismatic Congress (1996), pp. 311-320
3. Die Münzprägung der gallischen Kaiser in Köln, Trier und Mailand. Bonner Jahrbücher 146 (1941), pp. 1-106
4. The Alloy of the Gallic Empire's Antoniniani. Revue Numismatique 24 (1982), pp. 125-144
5. Online Coins of the Roman Empire: RIC V Postumus 75. ric.5.post.75