Postumus Silver Antoninianus RIC V Postumus 87

Monetary and Political Context

The appearance of the antoninianus classified as RIC V Postumus 87 marks the monetary inception of the Gallic Empire, an autonomous regime formed in AD 260 amidst systemic political fragmentation and cross-Rhine invasions. When Postumus broke from the central authority of Gallienus following the defeat and capture of Valerian I by the Sasanian Empire, he seized command of the western frontier legions stationed in Germania and Gaul. The economic machinery inherited by Postumus suffered from galloping inflation, debasement of the central Roman antoninianus, and logistical disruption. To win the immediate allegiance of the Rhine legions and provincial urban centers, Postumus initiated a coin reform characterized by silver issues struck at a notably higher intrinsic standard than the contemporary output of the Rome and Mediolanum mints. In this monetary environment, the SALVS PROVINCIARVM antoniniani served as direct payment to frontline troops. The silver content of these initial issues approached fifteen to twenty percent fine silver, presenting an attractive, well-struck alternative to the increasingly degraded debased radiates issuing from Gallienus. This stability in weight and alloy reinforced Postumus's claim to legitimate imperial authority and administrative competence in the West.

Production and Mint Attribution

The workshop responsible for RIC V Postumus 87 has been the subject of significant numismatic debate. Harold Mattingly and Percy H. Webb in the original Roman Imperial Coinage catalog attributed this type, along with the bulk of Postumus's early coinage, to the historic imperial mint of Lugdunum (modern Lyon). However, twentieth-century revisions sparked by Georg Elmer and reinforced by subsequent hoard studies, including the Cunetio hoard analysis by Edward Besly and Roger Bland, challenged this traditional assignment. Elmer argued that the primary administrative and military base of Postumus was situated at Colonia Claudia Ara Agrippinensium (Cologne) or Augusta Treverorum (Trier), locating the initial production close to the Rhine defense sector where military expenditures were concentrated. Contemporary researchers often designate the source of this early series simply as Gallic Mint I, reflecting caution while acknowledging that the administrative infrastructure was intimately tied to the frontier command. Production techniques for RIC V Postumus 87 reveal careful die engraving and blank preparation, yielding broader flans and sharper relief than contemporary central empire radiates, before increasing production pressures forced a reduction in technical oversight.

Obverse Iconography and Variations

The obverse of RIC V Postumus 87 presents a mature, dignified portrait of Postumus facing right, adorned with the radiate crown that had denoted the double-denomination value of the antoninianus since its introduction under Caracalla. The portrait style is characterized by a carefully rendered full beard, prominent aquiline nose, and tightly cropped curls, purposefully echoing the conservative military portraiture of Antonine and Severan emperors rather than the stylized conventions of third-century soldier-emperors. Minor stylistic variants exist across dies within this type classification. The emperor's bust is securely attested in two principal drapery configurations: draped right over a cuirass, or draped alone right. In both variants, the radiate crown sits firmly atop the head with rays projecting crisply into the upper border. The die cutters executed the portraiture with marked three-dimensional modeling, giving Postumus an authoritative and severe countenance intended to project military vigilance and moral gravitas.

Reverse Iconography of the Rhine

The reverse of RIC V Postumus 87 displays one of the most innovative and geographically explicit allegorical scenes in the imperial Roman series: the reclining figure of the river god Rhine, or Rhenus. The deity is portrayed as a mature, bearded male recumbent toward the left. He reclines his left elbow upon an overturned urn from which the waters of the river flow forth, symbolizing the geographic lifeblood of the frontier. In his left arm or hand, he holds either an anchor or a water reed, depending on the individual die engraving and interpretation. His right hand rests prominently on the bow or prow of a river boat, signifying safe navigation, frontier trade, and the riverine patrol fleet (the Classis Germanica) that secured the border against Germanic incursions. Certain dies depict small horns protruding from the forehead of the god, an ancient Greco-Roman iconographical convention for fluvial deities representing brute natural force. This composition directly celebrates the pacification and defensive fortification of the Rhine boundary under Postumus's personal leadership.

Epigraphy and Legends

The epigraphy of RIC V Postumus 87 features concise, classical letterforms free from the irregular ligatures and blunders that characterized later crisis issues. The obverse legend reads IMP C POSTVMVS P F AVG, expanding to Imperator Caesar Postumus Pius Felix Augustus. This standard formula asserted traditional imperial prerogative, emphasizing piety and good fortune while legally placing Postumus on equal footing with any claimant to the throne in Rome. The reverse inscription reads SALVS PROVINCIARVM, translating to 'The Safety of the Provinces' or 'The Health of the Provinces.' Unlike conventional central imperial issues that typically proclaimed the safety of the Augustus (Salus Augusti) or the Roman people (Salus Publica), this specific phrasing acknowledged the distinct regional identity and protective needs of the western territories under his jurisdiction. No mintmarks, officina letters, or control symbols appear in the fields or exergue of this early issue, as formalized mint signatures had not yet become standard practice within the newly established Gallic workshops.

Typology and Chronology

Within the chronological framework of Postumus's coinage, RIC V Postumus 87 belongs firmly to the inaugural phase of his reign, struck predominantly during AD 260 and 261. While the overall catalog scope in Roman Imperial Coinage encompasses the entire nominal span of his rule from AD 260 to 269, modern sequence studies place the SALVS PROVINCIARVM type strictly within Elmer's early emissions. The type served as an opening manifesto alongside complementary issues such as HERC DEVSENIENSI and RESTITVTOR GALLIARVM. The reverse type is typologically cataloged by Percy H. Webb under number 87 of volume V, part II, though modern specialists identify several die pairings that slightly alter the drapery of the bust or the attributes of the river god. As Postumus's reign progressed past AD 262, the Rhine type was phased out in favor of themes emphasizing Hercules, Victory, and conventional personifications like Pax, Moneta, and Providentia. The physical standards of RIC V 87 reflect this early placement: specimens typically exhibit broader flans averaging 20 to 23 millimeters in diameter and a substantial weight standard around 3.0 to 3.5 grams, well above the reduced flans of his final years.

Circulation and Hoard Evidence

Antoniniani of the RIC V Postumus 87 type circulated extensively across the Gallic Empire, with high concentrations documented in archaeological deposits across Roman Gaul, Britannia, Raetia, and the Germanic frontiers. Major British and French hoards, such as the Cunetio hoard in Wiltshire and the Normanville and Saint-Mard hoards, contain significant quantities of early Postumus billon radiates, demonstrating their swift distribution and subsequent retention by the populace. Because these early radiates possessed higher silver content than the rapidly collapsing coinages of Gallienus and Claudius II Gothicus, they were frequently hoarded and selectively pulled from daily circulation under Gresham's Law. Nevertheless, many surviving specimens exhibit moderate to heavy surface wear, indicating that they remained in commercial exchange through the 260s and 270s AD before being buried during the turbulent reconquest of the Gallic Empire by Aurelian in AD 274 or the subsequent Germanic incursions.

References

1. The Cunetio Treasure: Roman Coinage of the Third Century AD. pp. 41-47
2. Die Münzprägung der gallischen Kaiser in Köln, Trier und Mailand. pp. 1-106
3. The Gallic Empire: Coinage and History. pp. 25-50
4. Online Coins of the Roman Empire: RIC V Postumus 87. ric.5.post.87
5. The Roman Imperial Coinage, Volume V, Part II. p. 341, no. 87