Gallienus Antoninianus RIC V Gallienus 176k: Subtype 1

Monetary Context

The antoninianus represented by RIC V Gallienus 176k: Subtype 1 was produced during one of the most turbulent decades in Roman imperial history. Following the capture of Gallienus's father Valerian by Sasanian forces in AD 260, the Roman world fractured into regional secessionist entities, notably the Gallic Empire in the west and the Palmyrene realm in the east. Gallienus faced ceaseless frontier invasions across the Rhine and Danube alongside repeated military rebellions within the remaining central territories. To finance the expanded equestrian field army and satisfy continual troop payments, the imperial administration resorted to unprecedented debasement of the double denarius, or radiate antoninianus. While nominally categorized as a silver denomination, the metal alloy during the sole reign of Gallienus deteriorated from approximately twenty percent silver in the late 250s to below five percent, and at times under two percent, by AD 267 and 268. The alloy used for the zoo series was predominantly copper, alloyed with trace quantities of silver, tin, and lead. Mint workers applied chemical blanching or surface-enrichment processes to give newly struck blanks a thin, silvery sheen, but this fragile layer wore away rapidly in trade. Despite catastrophic loss of intrinsic value, the state enforced the coin at face value, driving older, finer billon out of general transactions in accordance with Gresham's law.

Production and Mints

RIC V Gallienus 176k: Subtype 1 was struck exclusively at the central imperial mint in Rome. During the mid-260s, the Rome mint was reorganized into an efficient industrial factory utilizing a system of numbered officinae, or workshops. To fulfill the massive volume required for state expenditure, the Rome mint operated up to twelve officinae simultaneously, each assigned specific deities, animal typologies, and workshop control letters. The fifth officina of the Rome mint, denoted by the Greek numeral epsilon, was specifically assigned to strike the reverse types dedicated to Diana. While the theoretical weight standard of the antoninianus had originally been around 5.10 grams under Caracalla, coins of this late sole-reign issue fluctuated widely, generally clustering between 2.0 and 3.5 grams with diameters typically ranging from 18 to 22 millimetres. Die preparation occurred at immense speed, leading to irregular flans, ragged edges, and frequent die clashes. Flans were cast in mass-moulded sheets or scoops and struck at high velocity, resulting in shallow relief and variable centering. Despite these industrial pressures, the stylistic engraving of the animal figures maintained remarkable elegance and anatomical coherence.

Obverse Design and Portraiture

The obverse of Subtype 1 features the bare radiate head of Gallienus facing right, lacking the paludamentum or cuirass seen on earlier issues. The radiate crown, originally introduced under Caracalla to denote the double denomination, stands prominent with sharply defined rays rising from a clean band. Portraiture during this late sole-reign phase reflects a distinct stylistic shift within the Rome mint's engraving schools. Earlier, naturalistic portraits of Gallienus gave way to a streamlined, almost transcendent imperial visage. The emperor is depicted with a lean neck, short, curled hair trimmed neatly around the nape, a high forehead, and an upward-tilted gaze that conveyed divine connection and vigilance. The beard is kept close-cropped along the jawline in the traditional soldier-emperor fashion. Because Subtype 1 specifies a simple radiate head rather than a draped or cuirassed bust, the truncation of the neck is plain, emphasizing the clarity and elegance of the imperial likeness amidst the frantic production pace of the workshop.

Reverse Design and Iconography

The reverse of RIC V Gallienus 176k: Subtype 1 features a doe, the sacred companion animal of Diana, shown either walking to the right or to the left, while turning its head backward over its shoulder. The doe is depicted with slender limbs, elongated neck, and delicate ears, capturing a moment of sudden alertness characteristic of wild game. In classical mythology, the doe or stag was intimately connected to Diana, goddess of the hunt, wild nature, and crossroads. Within the wider iconographic programme of Gallienus's zoo series, each Olympian patron was paired with symbolic fauna: Jupiter with a goat, Neptune with a sea horse, Apollo with a centaur or griffin, and Diana with either an antelope or a doe. The backward-glance motif (retrospiciens) is a classical artistic convention intended to suggest divine caution, watchfulness, and sensitivity to unseen dangers. In the exergue beneath the ground line, the coin typically bears an officina mark, most commonly the Greek letter epsilon, identifying the fifth workshop of the Rome mint as the producing facility.

Epigraphy and Legends

The obverse inscription reads IMP GALLIENVS AVG, moving clockwise from the lower left to the upper right. The legend renders standard imperial titular abbreviations: Imperator (military commander and emperor), the nomen Gallienus, and Augustus (venerable sovereign). This concise formula replaced the lengthier titles from earlier in his reign, streamlining die engraving for the Rome mint's workforce. The reverse inscription presents the dative dedication DIANAE CONS AVG, an abbreviation for Dianae Conservatrici Augusti, translating as 'To Diana, the Protector of the Augustus.' This invocation departs from earlier reverse slogans that celebrated accomplished military victories or imperial virtues, such as Victoria Augusti or Virtus Augusti. Instead, the wording constitutes an explicit religious appeal, pleading for the preservation and safeguarding of the emperor amidst rampant political crises and military peril. Lettering on both faces is typically rendered in compact, unserifed capitals that occasionally exhibit broken letter bars or die degradation due to the intense volume of strikings.

Typology and Chronology

Modern numismatic scholarship places the zoo series, including RIC V Gallienus 176k: Subtype 1, in the final phase of Gallienus's sole reign, traditionally dated to AD 267 or 268. Although Roman Imperial Coinage Volume V originally grouped the issue across the broader sole reign of AD 260 to 268, studies by Andreas Alfoeldi and subsequent hoard analyses have refined this chronology to the period immediately preceding Gallienus's assassination outside Mediolanum (Milan) in autumn AD 268. The overarching series encompasses a structured set of issues invoking Apollo, Diana, Hercules, Jupiter, Neptune, Sol, and lesser protective spirits. Subtype 1 of type 176k is specifically categorized by its plain radiate head facing right, which distinguishes it from related variants bearing cuirassed busts (such as 176a) or radiate and draped busts. Furthermore, within type 176, dies record variations in animal posture, alternating between a doe stepping right and one stepping left, both retaining the characteristic backward glance. The exergual officina mark epsilon distinguishes Rome's production from unassigned or branch issues, fixing the type into an organized, short-lived mass issue.

Circulation, Hoarding, and Legacy

Once released, billon radiates of RIC V Gallienus 176k: Subtype 1 circulated rapidly throughout Italy and the central provinces, including Raetia, Noricum, Pannonia, and parts of the western Mediterranean. Due to their severely diminished silver content, populations had little incentive to sequester them selectively; instead, they were spent swiftly in everyday transactions. Nevertheless, the extreme monetary volatility of the late 260s and 270s prompted massive hoarding of low-grade billon as general banking and credit structures collapsed. Subtype 1 is abundantly recorded in major third-century savings and emergency deposits, notably the Cunetio and Normanby hoards in Roman Britain, as well as continental hoards across Gaul, Germany, and the Balkans. When Claudius II Gothicus and Aurelian succeeded Gallienus, coins of this type remained in active circulation alongside irregular contemporary imitations (often termed barbarous radiates) until Aurelian's monetary reform of AD 274 introduced the twenty-to-one aurelianianus. Even after demonetization or tariffing adjustments, worn examples of Gallienus's animal series continued to change hands into the early fourth century, leaving an enduring physical record of third-century economic survival.

References

1. Studien zur Geschichte der Weltkrise des 3. Jahrhunderts nach Christus. pp. 9-45
2. Coin Hoards and Hoarding in the Roman Empire. pp. 185-210
3. The London Mint of Constantius and Constantine. Historical Introduction, pp. 11-18
4. Online Coins of the Roman Empire: RIC V Gallienus 176k: Subtype 1. Type ric.5.gall(2).176k.1
5. The Roman Imperial Coinage, Volume V, Part I. pp. 146-147, no. 176