Postumus Silver Antoninianus RIC V Postumus 67

Monetary Context and the Gallic Secession

The antoninianus represented by RIC V Postumus 67 emerged directly from the geopolitical fragmentation of the Roman Empire during the crisis of the third century. Following the capture of Emperor Valerian by the Sasanian Persians in AD 260, Roman authority in the West fractured. Postumus, commanding Roman legions along the Rhine frontier, revolted against Saloninus and established an autonomous regime encompassing Gaul, Britain, and Hispania. A critical instrument of political legitimacy and economic stabilization was the monetary system. The central Roman mints under Gallienus were rapidly reducing the silver content of the radiate billon coin, dropping its fineness toward mere traces of silver washed over a bronze or copper core. In contrast, Postumus consciously established an independent monetary policy characterized by an antoninianus of significantly higher weight and silver purity. This conservative metal standard offered reliable pay to the Rhine garrisons and promoted internal commerce across the western provinces. The issue of RIC V Postumus 67 functioned not merely as standard military disbursement, but as visual and economic proof that the Gallic Empire maintained classical Roman discipline and financial integrity far better than the central administration in Rome.

Production Standards and Mint Attribution

In the foundational classification of Percy H. Webb in Roman Imperial Coinage Volume V, Part II, RIC V Postumus 67 was attributed to the mint of Lugdunum (modern Lyon). Webb based this classification on the traditional assumption that Lugdunum remained the chief administrative mint of Roman Gaul. However, subsequent twentieth-century hoard studies and typographical analyses, notably pioneered by Georg Elmer and expanded by modern numismatists such as Edward Besly and Roger Bland, have revised this perspective. Scholars often designate the principal active workshops as Mint I and Mint II, commonly identifying them as Cologne (Colonia Claudia Ara Agrippinensium) or Trier (Augusta Treverorum), which served as the operational centers and imperial capitals of Postumus along the contested frontier. Production of this type involved carefully carved steel dies striking billon blanks that generally weighed between 2.8 and 3.6 grams, with a module averaging 20 to 22 millimeters. The alloy of the early and mid-reign issues typically maintained between 15 and 20 percent silver, substantially outperforming contemporary central Roman antoniniani. Die engraving displays competent provincial classicism, with crisp relief and well-centered strike alignment typical of Postumus's primary mint workshops.

Obverse Iconography and Imperial Portraiture

The obverse of RIC V Postumus 67 presents a dignified and mature portrait of Postumus facing right, adorned with the radiate crown that had denoted the double-denarius denomination since its introduction by Caracalla. The catalogued type allows for slight variations in the bust drapery, recording portraits that are either draped alone or draped and cuirassed over military garb. In accordance with third-century imperial ideology, the portrait style portrays a commanding soldier-emperor. The beard is rendered with textured, closely cropped curls, while the facial features emphasize a firm jawline, prominent brow, and resolute expression. This distinctive iconography distanced Postumus from the softer dynastic representations of Gallienus, reinforcing his image as a vigorous defender of the Rhine. The radiate crown is rendered with sharply cut points radiating from a raised band, sitting atop naturally articulated hair. The die cutters executed these portraits with considerable anatomical care, maintaining an artistic standard that stood out amidst the hurried mass production common in mid-third century provincial coinage.

Reverse Iconography of Hercules Pacifer

The reverse of RIC V Postumus 67 is dedicated to Hercules in his peaceful guise, bearing the representation of Hercules Pacifer. The demigod stands facing left, depicted as a muscular hero nude except for the lion pelt draped over his left forearm. In his lowered right hand, he extends an olive branch, the universal classical symbol of peace and reconciliation. In his left hand, resting against his hip or shoulder, he holds his heavy knotted wooden club alongside the folds of the Nemean lion's skin. Postumus placed Hercules at the center of his personal religious and ideological program, venerating him under numerous titles including Hercules Deusoniensis, Hercules Magusanus, and Hercules Gaditanus. By invoking Hercules as the Pacifer or peacemaker, the coin articulates a sophisticated political message: peace was won through martial valor and the physical exertion of heroic labors. Rather than an idealized Roman Pax holding a cornucopia, the Gallic regime preferred a peace secured by the strength and vigilance of a divine protector, mirroring Postumus's claim of having pacified the barbarian tribes across the northern frontier.

Epigraphy and Legend Structure

The epigraphy of RIC V Postumus 67 conforms to standard imperial Latin conventions while reinforcing specific ideological titles. The obverse legend reads IMP C POSTVMVS P F AVG, which expands in full Latin formula to Imperator Caesar Postumus Pius Felix Augustus. The title Imperator acknowledges his supreme military command and the acclamation of the Rhine legions, while Caesar and Augustus confirm his full imperial status as legitimate ruler of the Roman world. The epithets Pius (dutiful) and Felix (fortunate) invoke traditional imperial virtues, conveying moral devotion to the state, the army, and the gods. On the reverse, the legend HERC PACIFERO is presented in the dative case, translating as 'To Hercules the Peacemaker.' Dedicatory reverse legends in the dative case were standard practice in the Roman imperial series, serving as formal offerings or vows dedicated to divine patrons on behalf of the emperor and the state. Lettering is rendered in clean, sans-serif Roman capitals, executed with sharp punctuation and regular spacing along the outer beaded borders of the dies.

Typology and Chronological Placement

Within the extensive coinage of Postumus, RIC V Postumus 67 forms part of a substantial Hercules-themed series struck across multiple phases of his reign. While the cataloguing in RIC V assigns the broad span of AD 260 to 269 corresponding to the entire reign of Postumus, specialized chronological reconstructions provide narrower windows of production. Georg Elmer's systematic study of the Gallic series placed the primary emission of the HERC PACIFERO reverse relatively early in the reign, around AD 260 to 262, following the consolidation of the Gallic borders and the restoration of order in the western provinces. Later hoard studies, such as the analysis of the Cunetio and Normanby hoards by Besly and Bland, demonstrate that Hercules Pacifer types continued to be produced or reissued in subsequent emission phases at Mint I. Typological distinctions within the series involve subtle variations in the treatment of the bust (draped versus draped and cuirassed) and the orientation or drapery of the lion pelt. The type is closely related to contemporaneous issues dedicated to Hercules Deusoniensis and Hercules Victor, forming a cohesive thematic corpus celebrating the emperor's heroic endeavors.

Hoard Evidence and Circulation Patterns

Extensive hoard evidence across western Europe confirms that antoniniani of the RIC V Postumus 67 type circulated heavily throughout the territories of the Gallic Empire and continued to circulate long after Postumus's death. Major British finds, including the monumental Cunetio Hoard and the Normanby Hoard, contained thousands of billon coins of Postumus, among which HERC PACIFERO issues are richly represented. Similar high-volume deposition is documented in French, Belgian, and German hoards along the Rhine and Moselle river valleys. Because Postumus preserved a noticeably superior alloy compared to the debased issues of Gallienus and Claudius II Gothicus, Gallic antoniniani were subject to Gresham's Law. Citizens frequently hoarded the higher-purity billon issues of Postumus, while spending the severely debased central imperial pieces. Even after Aurelian reconquered the Gallic Empire in AD 274 and initiated currency reforms, worn radiates of Postumus remained in secondary circulation or were cut, countermarked, and imitated by local populations in irregular provincial workshops, illustrating the enduring legacy of this monetary series.

References

1. The Cunetio Treasure: Roman Coinage of the Third Century AD. British Museum Publications, London, 1983
2. Die Münzprägung der gallischen Kaiser in Köln, Trier und Mailand. Bonner Jahrbücher 146, 1941
3. The Western Coinages of Postumus and his Successors. Roman Coins and Medals, Oxford
4. Online Coins of the Roman Empire: RIC V Postumus 67. ric.5.post.67
5. The Roman Imperial Coinage, Volume V, Part II. p. 341, no. 67