Gallienus Antoninianus, RIC V Gallienus 495a: Subtype 2

Monetary Context and Currency Crisis

The antoninianus, originally introduced under Caracalla in AD 215 as a double-denarius tariffed piece, stood as the core silver-denominated currency of the Roman Empire by the middle of the third century AD. Following the capture of Gallienus's father and co-emperor Valerian I by the Sasanian Persians in AD 260, the Roman monetary system entered a period of unprecedented disruption. Gallienus assumed sole governance over a fractured empire, simultaneously facing the breakaway Gallic Empire in the west, separatist authorities in Palmyra to the east, and persistent Germanic incursions across the northern frontiers. To meet astronomical military payrolls and sustain logistical readiness, the imperial administration drastically accelerated coin production while reducing fineness. While antoniniani minted during the joint reign of Valerian and Gallienus maintained a debased but noticeable silver fineness often between 15 and 20 percent, the sole reign witnessed a collapse in metal quality. By the mid-260s AD, the antoninianus had effectively become a billon or silver-washed bronze piece, frequently containing less than 5 percent silver. The physical coin family of RIC V Gallienus 495a exemplifies this transformational phase. Struck on rapidly prepared flans, these coins preserved the nominal legal fiction of silver currency while functioning in reality as heavily fiduciary tokens. The economic environment forced rapid regional circulation, hoarding of earlier and finer silver issues, and widespread dependence on imperial bronze-billon radiate issues for military and state transactions.

Production and the Mediolanum Mint

The catalogued coin RIC V Gallienus 495a: Subtype 2 was produced at the imperial mint of Mediolanum (modern Milan). Mediolanum rose to primary strategic importance during the reign of Gallienus due to its proximity to the Alpine passes, northern Italy, and the Danubian military staging grounds. The emperor established an active cavalry strike force based in northern Italy under commanders such as Aureolus, requiring an agile, high-volume mint nearby to provide regular liquidity without reliance on the mint in Rome. Numismatic scholarship, pioneered by Percy Webb in Roman Imperial Coinage and refined in modern die studies by Robert Göbl and Sylviane Estiot, identifies Mediolanum by its distinct regional stylistic execution and specific officina organization. The engravers at Mediolanum exhibited a distinctive portrait style: Gallienus's features often show an elongated neck, neat facial modeling, and sharp, linear hair curls under the radiate spikes. In contrast to the heavy, muscular modeling characteristic of the central mint in Rome, Mediolanum obverse portraits tend toward compact, stylized elegance. Coin flans at Mediolanum during this stage were cast rapidly and often struck hot, resulting in irregular edges, small blanks, and frequent off-center strikes. The mass of typical Mediolanum billon antoniniani clustered between 2.5 and 3.5 grams with diameters ranging from 18 to 22 millimeters, although significant specimen-to-specimen variance exists due to hurried factory conditions. The chemical composition is heavily cuprous with a small percentage of silver mixed into the alloy and often finished with an artificial surface enrichment or silver wash that quickly wore away in active circulation.

Obverse Design and Portraiture

The obverse of RIC V Gallienus 495a: Subtype 2 displays the right-facing bust of Emperor Gallienus wearing the radiate crown, the classic numismatic signifier of the double denomination. The defining attribute of this exact subtype is the specific drapery treatment: the emperor is shown with a radiate, draped bust right, viewed usually from behind or three-quarters view, rather than the alternative cuirassed or draped-and-cuirassed variations grouped under the broader RIC 495 umbrella. The portrait captures the artistic conventions of the later period of Gallienus's reign. The radiate crown sits firmly atop carefully engraved curls, with ribbons falling onto the drapery behind the neck. Gallienus's profile is rendered with a straight nose, a short beard neatly delineated across the jawline, and large, expressive eyes that reflect the subtle transition toward late antique imperial iconography. The drapery folds on the shoulder are rendered with soft, concentric grooves, contrasting with the rigid metal plates of cuirassed dies. Die cutters occasionally varied the depth of the relief and the exact angle of the bust, but the draped presentation remains the hallmark distinguishing Subtype 2 within the Mediolanum series.

Reverse Iconography of Sol and Divine Light

The reverse of RIC V Gallienus 495a: Subtype 2 depicts the deity Sol standing left. He is shown radiate and nude, except for a chlamys (cloak) draped over his left shoulder or flying lightly behind him. Sol raises his right arm in an open-handed gesture of blessing, protection, and imperial greeting (adlocutio), while holding a whip in his lowered left hand. The whip is an ancient attribute of Sol as charioteer of the sun, signaling his celestial journey across the sky and his commanding authority over the cosmic order. This imagery carries strong political and religious significance in the sole reign of Gallienus. The solar cult had steadily gained preeminence across the military hierarchy of the mid-third century AD. By invoking Sol, the coin emphasized divine invincibility and the dawn of a new era of stability amidst profound military uncertainty. The motif served as visual propaganda targeted directly at the soldiers stationed in northern Italy, assuring them that the celestial gods favored Gallienus's legitimate imperial line over rivals and usurpers.

Legends and Epigraphy

The legends on both faces of the coin are concise, direct, and fully standardized according to the imperial epigraphic norms of Mediolanum. On the obverse, the legend reads GALLIENVS AVG, moving continuously clockwise from lower left to lower right along the inner border. The absence of additional titles such as PONTIFEX MAXIMVS, PATER PATRIAE, or iterated tribunician powers reflects the late-reign practice of shortening legends to maximize the visual area for the portrait and expedite die engraving. The reverse inscription reads ORIENS AVG, translating as 'The Rising Sun of the Emperor' or 'The East of the Emperor'. The phrase connects the solar deity directly to the persona and reign of Gallienus. Epigraphically, the letters are rendered in tall, narrow Roman capitals typical of Mediolanum die sinkers, often exhibiting slight variations in bar placement or letter spacing due to freehand die cutting. Field marks or officina letters (such as P, S, or T) appear on some Mediolanum emissions of this phase, though RIC 495a is classically catalogued without mandatory reverse field marks. Minor differences in letter size and spacing are standard throughout the die corpus.

Typology and Chronological Classification

Within the typology of Roman Imperial Coinage, type 495 under Gallienus's Mediolanum series comprises multiple bust variants, designated as 495a and 495b. RIC 495a represents the varieties featuring radiate, draped, or cuirassed busts, while 495b features alternative armor or bust treatments. The modern digital catalogue of Online Coins of the Roman Empire (OCRE) defines Subtype 2 explicitly by its radiate, draped right bust, differentiating it from Subtype 1 (which displays a radiate, cuirassed bust right) and other variations. Chronologically, this issue belongs to the sole reign of Gallienus, falling between AD 260 and 268. Robert Göbl's comprehensive chronological framework in Moneta Imperii Romani (MIR 36) contextualizes the ORIENS AVG types within the later Mediolanum emissions struck to support the emperor's defense against Postumus and internal military rivals. Although traditional RIC dating spans the entire broad sole reign of AD 260 to 268, modern numismatic consensus often narrows these Mediolanum solar issues to approximately AD 264 to 267. Absolute precision remains elusive because the coin lacks explicit tribunician or consular numbers, relying instead on stylistic groupings and hoards for dating.

Circulation, Hoards, and Archaeological Evidence

Coins of RIC V Gallienus 495a circulated widely through Italy, the Danubian provinces, and across Western Europe. Because the Mediolanum mint was situated at a major continental crossroad, its coin output accompanied troops traveling between Italy, the Balkans, and the Rhine. Numerous third-century hoards discovered throughout Britain, France, Germany, and the Mediterranean basin contain antoniniani of this type, often intermixed with contemporary issues from Rome and Siscia. Archaeological and hoard evidence reveals that coins of this type remained in active circulation for several years after the assassination of Gallienus outside Mediolanum in AD 268. During the reigns of Claudius II Gothicus, Quintillus, and Aurelian, debased billon radiates continued to pass hand-to-hand until Aurelian's monetary reform in AD 274 introduced marked, higher-grade radiates (aureliniani). Even after the reform, older base radiates often lingered in local everyday commerce as small fractional tokens. Because of the thinness of the initial silver surface enrichment, archaeological finds of Subtype 2 typically survive with dark copper-oxide patinas or stripped surfaces, reflecting both their heavy economic circulation and the austere metallurgy of the crisis era.

References

1. Catalogue des monnaies de l'Empire romain: Gallien. Mediolanum issues
2. Die Münzprägung des Kaisers Gallienus (MIR 36). Mediolanum emissions
3. Online Coins of the Roman Empire: RIC V Gallienus (2) 495a.2. ric.5.gall(2).495a.2
4. The Roman Imperial Coinage, Vol. V, Part I. p. 175, no. 495