Marcus Claudius Tacitus Silver Antoninianus, RIC V Tacitus 163

Monetary Context

The accession of Marcus Claudius Tacitus in late 275 AD followed the sudden murder of Aurelian and a brief interregnum during which the imperial administration maintained civic stability. Under Aurelian, the Roman currency system had undergone structural reform aimed at re-establishing confidence in base-metal coinage. The core denomination of daily commerce remained the radiate antoninianus, also termed the aurelianianus in post-reform contexts. Aurelian had stabilized the physical standards of this denomination, establishing a theoretical weight standard near 3.8 to 4.2 grams and fixing the silver content around five percent, typically expressed by the mark XXI or KA on many eastern and western issues. Upon taking power, Tacitus inherited this reformed monetary apparatus. Rather than reversing Aurelian's monetary policies, the mints operating under Tacitus maintained identical metallurgical and stylistic standards. Although catalogued as silver in traditional numismatic references, RIC V Tacitus 163 is a billon coin composed primarily of copper with a minor fraction of silver, originally brightened by an enriched surface treatment or dipping in a blanching bath before striking. The continuation of this denomination ensured continuity across the empire's internal market, facilitating army payrolls and commercial exchange without precipitating the catastrophic inflation that had characterized the mid-third-century crisis.

Production and Mints

RIC V Tacitus 163 was struck exclusively at Ticinum (modern Pavia in northern Italy). The mint of Ticinum was a relatively new establishment, having been opened around 274 AD by Aurelian through the transfer of staff, equipment, and engraving traditions from nearby Mediolanum (Milan). Positioned strategically near primary transit and military corridors in the Po Valley, Ticinum was ideally situated to strike coinage for legions operating along the Danubian frontier and throughout northern Italy. During the reign of Tacitus, Ticinum operated multiple distinct officinae (workshops), typically designated by letters or symbols in the exergue on reverse dies. The production techniques followed standardized Roman mint protocol: flans were cast in open or tiered molds, heated, and struck between hand-carved iron dies. Dies for RIC V Tacitus 163 exhibit the distinct northern Italian stylistic hallmark of the era, characterized by crisp, neat lettering, neat anatomical proportions, and high-relief engraving. The output of Ticinum under Tacitus was vigorous despite the ruler's short rule of less than a year, reflecting the urgent necessity to produce coinage bearing the new emperor's name across all active workshops.

Obverse Design and Iconography

The obverse of RIC V Tacitus 163 presents an imperial portrait of Marcus Claudius Tacitus facing right. In accordance with the conventional iconographic code of the antoninianus denomination, the emperor wears a radiate crown, whose spikes symbolize the solar rays of Sol Invictus and immediately signaled the denomination of two denarii to ancient users. Die cutters at Ticinum executed the portrait in two recognized drapery configurations: one showing Tacitus radiate, draped, and cuirassed, viewed from the side, and a second variant depicting him radiate and cuirassed only. The portraiture is mature, dignified, and reflective of the Senate's elderly nominee, depicting a trimmed beard, prominent brow, and resolute expression. This representation balanced militaristic vigilance, signaled by the armored cuirass, with civic authority, ensuring that soldiers and citizens recognized the legitimacy of the newly elevated princeps.

Reverse Iconography

The reverse of RIC V Tacitus 163 features the female personification Securitas, emblematic of personal safety, freedom from anxiety, and political stability for the Roman state. Securitas stands facing left, her legs casually crossed in an attitude of unhurried repose and absolute tranquility. She rests her left arm upon a low architectural column or cippus, a classical iconographic device denoting firmness, structural permanence, and immobility against external chaos. In her right hand, Securitas gestures upward toward her head, touching or holding her temple in a characteristic pose of calm contemplation. Her body is draped in a long stola that cascades around her legs. In the chaotic context of the late third century, when rapid successions, military usurpations, and sudden imperial assassinations plagued the empire, invoking Securitas was an essential act of political reassurance. The design assured the Roman populace and military factions that the commonwealth remained firmly anchored under Tacitus's stewardship.

Inscriptions and Epigraphy

The obverse inscription of RIC V Tacitus 163 reads IMP C M CL TACITVS AVG, representing a fully standard imperial titular formula. This expands in Latin as Imperator Caesar Marcus Claudius Tacitus Augustus. The prefix Imperator proclaims his supreme military command; Caesar ties him to imperial tradition; Marcus Claudius Tacitus identifies his personal and gentile names; and Augustus confirms his supreme constitutional authority. The reverse inscription reads SECVRIT PERP, abbreviating Securitas Perpetua (Perpetual Security). This legend directly interprets the accompanying figure, framing the imperial regime not merely as an ad-hoc military administration, but as the guarantor of enduring peace. The epigraphy at Ticinum during this phase is noted for its balanced letter spacing, well-formed serifs, and disciplined alignment along the circular die borders, demonstrating an exceptional degree of bureaucratic and artistic control in the northern Italian mint.

Typology and Chronological Sequence

In the standard classification established by Percy H. Webb in The Roman Imperial Coinage (Volume V, Part I), this issue is numbered Tacitus 163. Within the broader typology of Tacitus's coinage, the issue fits into the earlier portion of his brief northern Italian emissions, struck between late autumn 275 AD and the summer of 276 AD. Modern metallurgical and hoard analyses, particularly those led by Sylviane Estiot, place RIC 163 within the first and second emission phases of Ticinum, where the Securitas types operated alongside companion reverses celebrating Pax, Fides Militum, and Felicitas. Typological variation in RIC 163 manifests primarily in obverse bust dress, alternating between radiate draped and cuirassed or radiate cuirassed alone, as well as minor differences in workshop marks appearing in the reverse field or exergue. While some western mints like Lugdunum struck parallel Securitas types, the distinct die cutting, portrait modeling, and exergual treatments clearly distinguish the Ticinum specimens. The entire emission was truncated abruptly in mid-276 AD by news of the emperor's demise in Asia Minor and the brief, contested succession of his brother Florianus.

Circulation and Monetary Life

Although minted at Ticinum, antoniniani of type RIC 163 circulated broadly throughout the western provinces, including Italy, Gaul, Raetia, Noricum, and along the Danubian limes. Hoard evidence from Italy and northwestern Europe reveals that post-reform antoniniani of Tacitus circulated in intimate association with those of Aurelian, Florianus, and Probus. Because their metallic purity conformed strictly to the post-274 standard, these pieces avoided immediate melting or selective hoarding, functioning as trusted currency in ordinary market transactions and military stipends. The circulating lifespan of RIC 163 lasted approximately two decades. The denomination continued to circulate actively until the monetary reform of Diocletian in 294 to 296 AD, which introduced the nummus (follis) and relegated the older radiate billon coins to subsidiary status or demonetization. Many surviving specimens display moderate circulation wear and varying preservation of the original surface silvering, attesting to practical use in the commercial life of the late third century.

References

1. La politique monétaire des empereurs romains de 238 à 311. pp. 240-255
2. Monnaies de l'Empire romain XII.1: D'Aurélien à Florien (275-276 après J.-C.). Catalogue des monnaies de Ticinum
3. Online Coins of the Roman Empire: RIC V Tacitus 163. ric.5.tac.163
4. The Roman Imperial Coinage, Volume V, Part I. p. 343, no. 163