Postumus Antoninianus RIC V Postumus 64

Monetary Context and the Gallic Secession

The creation of the Gallic Empire in 260 AD arose during a period of profound military and economic instability across the Roman world. Following the capture of Emperor Valerian by the Sasanian Empire and intense pressure along the Rhine and Danube frontiers, Postumus seized power in Gaul, securing the allegiance of Britain, Spain, and German military garrisons. A fundamental priority of the newly established regime was securing the loyalty of regional legions through regular, dependable pay. Under Gallienus in Rome, the imperial antoninianus had undergone catastrophic debasement, shedding much of its silver content and collapsing in public confidence. Postumus countered this trend by initiating a monetary reform that restored both the weight standard and the silver fineness of his radiates. Typical antoniniani of this initial period maintained an alloy of approximately fifteen to twenty percent silver, visibly superior to central imperial issues. RIC V Postumus 64 belongs to this period of monetary revitalization, serving not merely as daily currency but as a tangible instrument of political legitimacy and economic stabilization in the western provinces.

Production Standards and Mint Attribution

In the standard classification of Percy H. Webb in Roman Imperial Coinage Volume V, Part II, RIC 64 is attributed to the primary workshop at Lugdunum. Webb grouped the vast majority of Postumus's principal coinages under Lugdunum based on early nineteenth-century numismatic tradition. However, mid-twentieth-century research, led by Georg Elmer's foundational study of Gallic imperial coinage, revised this framework by demonstrating that Postumus established his initial mint at Colonia Claudia Ara Agrippinensium (Cologne), closer to the Rhine military command. Subsequent analysis of hoard sequences, such as the Cunetio and Normanby hoards, suggests that Postumus operated two primary minting operations, often designated Mint I and Mint II, identified with Cologne and potentially Trier or Lyon. Antoniniani of type RIC 64 were produced on carefully prepared flans, typically adhering to an average weight standard around 2.8 to 3.5 grams, with typical diameters ranging between 20 and 22 millimeters. The dies were crafted by skilled engravers capable of rendering crisp relief and detailed portraiture, reflecting the high administrative priority given to the early Gallic billon coinage.

Obverse Iconography and Royal Portrayal

The obverse of RIC V Postumus 64 displays a right-facing bust of Postumus wearing the radiate crown characteristic of the double-denarius denomination. Catalogued variations within this type encompass both a bust that is radiate and draped, and a bust that is radiate, draped, and cuirassed. The portrait style is notable for its mature, heavy features, prominent straight nose, and meticulously groomed beard and mustache, evoking the traditional military demeanor of classic third-century soldier-emperors. In contrast to the stylized, increasingly abstract portraiture found on central imperial radiates of the 260s AD, Postumus's portraits maintain high sculptural relief and individualized detail. The radiate crown, traditionally associated with Sol, signifies the imperial office and the double-tariff value of the coin, while the drapery and cuirass visually reinforce his dual civilian and military authority as commander-in-chief of the Rhine frontier armies.

Reverse Iconography and Hercules Deusoniensis

The reverse iconography of RIC 64 presents Hercules standing facing right, his body balanced as he leans his right hand upon his knotted wooden club, which rests on the ground. In his left hand and draped over his arm, Hercules holds a strung bow alongside the pelt of the Nemean Lion. The deity is depicted nude, showcasing muscular anatomy consistent with classical Greco-Roman representations of the hero. What distinguishes this issue is the specific regional syncretism signaled by the accompanying dedication. Hercules Deusoniensis was a localized protector god whose primary cult center is widely believed to have been located at Deuso, frequently identified with modern Diessen in North Brabant, or an adjacent settlement in Lower Germany. By adopting Hercules Deusoniensis as an imperial companion (comes), Postumus aligned his defensive efforts directly with the spiritual traditions of the local military recruits and regional aristocracy, presenting himself as the divinely sanctioned champion protecting the frontier from Germanic incursions.

Epigraphy and Legend Readings

The obverse legend on RIC 64 reads consistently as IMP C POSTVMVS P F AVG, expanding in full Latin to Imperator Caesar Postumus Pius Felix Augustus. This inscription declares Postumus as rightful sovereign through the traditional triumphal title Imperator, the dynastic designation Caesar, the epithets Pius Felix (Dutiful and Blessed), and the paramount title Augustus. By employing the complete, unadulterated imperial titulature of Rome, Postumus asserted parity with any rival claimant while maintaining the legal fiction that the Romano-Gallic state constituted the true Roman Empire. The reverse bears the dedicatory legend HERC DEVSONIENSI, formulated in the dative case to signify an offering: 'To Hercules of Deuso'. The epigraphy on these early issues is rendered in clean, well-proportioned Roman capitals with neatly formed serifs, avoiding the cramped lettering and frequent ligature errors that characterized later Gallic and central Roman issues during the severe debasement phases of the 270s AD.

Typological Variants and Chronological Placement

Within the typology of Postumus's coinage, the Hercules Deusoniensis series occupies a pivotal position in the early to middle phases of the reign. In RIC V, Webb assigned the type broad inclusive dates corresponding to Postumus's rule, from 260 to 269 AD. Subsequent chronological analyses, particularly by Georg Elmer and modern hoard scholars such as Roger Bland and Edward Besly, have refined this sequence. The earliest emissions of the Hercules Deusoniensis type, which began in Elmer's first and second series around 260 to 261 AD, were struck with obverse legends lacking later consular or tribunician numbers, as seen on RIC 64. Typological variations of the type are distinguished primarily by subtle differences in bust ornamentation, including drapery over the left shoulder versus full military cuirassing beneath the paludamentum. Related sister types feature Hercules facing left, Hercules standing within a distyle temple, or alternate companion legends such as HERC PACIFERO, illustrating a comprehensive theological program centering upon Heraklean protection.

Circulation, Hoards, and Economic Impact

Antoniniani of type RIC V Postumus 64 enjoyed widespread circulation throughout the territories controlled by the Gallic Empire, comprising modern France, Belgium, Luxembourg, parts of Germany, and Britain. Due to their superior intrinsic value compared to contemporary radiates of Gallienus and Claudius II, coins of this type were frequently hoarded by the civilian and military populace as a store of real wealth. Significant quantities have been documented in major western coin deposits, including the massive Cunetio hoard in Wiltshire, the Normanby hoard, and numerous continental deposits across the Rhineland and central Gaul. Even following the reincorporation of the Gallic provinces into the central empire under Aurelian in 274 AD, pieces of RIC 64 continued to circulate in reduced numbers. Over time, extensive circulation led to progressive wear, clipping, and eventual inclusion in late third-century emergency hoards, providing modern numismatists with critical stratigraphic benchmarks for dating frontier unrest and monetary circulation patterns.

References

1. The Cunetio Treasure: Roman Coinage of the Third Century AD. British Museum Publications, London, 1983
2. The Gallic Empire: Separatism and Continuity in the North-Western Provinces of the Roman Empire, A.D. 260-274. Historia Einzelschriften 52, Stuttgart, 1987
3. Die Münzprägung der gallischen Kaiser in Köln, Trier und Mailand. Bonner Jahrbücher 146, 1941, pp. 1-106
4. Roman Coins from the Earliest Times to the Fall of the Western Empire. Methuen, London, 1960
5. Online Coins of the Roman Empire: RIC V Postumus 64. ric.5.post.64
6. The Roman Imperial Coinage, Volume V, Part II. p. 341, no. 64