Valentinian I Bronze AE3, RIC IX Thessalonica 16A

Monetary Context

Upon his accession in AD 364 and subsequent elevation of his brother Valens as co-Augustus, Valentinian I inherited an imperial currency system still grappling with the inflationary instability of the mid-fourth century. While the solidus remained the reliable anchor of gold transactions, base metal coinage had experienced successive waves of debasement and reform under Constantius II and Julian. The early Valentinian administration restructured copper-alloy denominations to stabilize fractional currency, issuing bronze coins classified by modern numismatists as AE3, which represented a moderate module distinct from both the larger earlier maiorinae and the tiny AE4 fractions that followed later in the dynasty. RIC IX Thessalonica 16A served as an essential component of this newly standardized bronze medium, providing standardized purchasing power for small-scale local exchanges, troop provisioning, and civic market trade across the eastern and central administrative spheres.

Production and Mints

The Thessalonica mint occupied a vital strategic crossroads between the Western and Eastern administrative divisions of the Roman Empire, operating along the Via Egnatia. In the opening phase of Valentinian's reign, the mint struck issues for both Valentinian I and Valens. RIC IX Thessalonica 16A was struck in copper alloy using traditional hot striking techniques between two engraved bronze or iron dies. Production at Thessalonica was partitioned between two distinct operating workshops, designated in exergual mintmarks as officina prima and officina secunda, typically abbreviated as TES followed by officina letters such as A or B. Die-axis orientations at Thessalonica during this period were commonly adjusted to six o'clock or twelve o'clock, reflecting the tight mechanical discipline maintained by mint magistrates even while processing vast quantities of bronze flans.

Obverse Design

The obverse of RIC IX Thessalonica 16A presents an official portrait of Valentinian I, rendered as a right-facing bust wearing a pearl diadem, paludamentum, and cuirass. The pearl diadem, comprised of twin rows of pearls punctuated by central rosettes or jewel clasps, stood as the recognized standard badge of imperial autocratic authority established in the Constantinian period. The emperor is depicted with clean-shaven features, closely cropped hair, and stylized eyes gazing forward, embodying the austere military portraiture preferred by the Pannonian dynasty. The draping of the military cloak over the breastplate underscores the dual civic and martial identity of the Augustus, projecting both bureaucratic command and personal readiness for field warfare.

Reverse Iconography

The reverse iconography of RIC IX Thessalonica 16A depicts the emperor in full military kit striding vigorously to the right. With his lowered right hand, he seizes a diminutive captive by the hair, dragging the suppliant figure along the ground line. In his left hand, the emperor uprightly holds the labarum, the imperial military standard adorned with the Chi-Rho monogram. This composition, paired with the legend GLORIA RO-MANORVM, formed one half of the core thematic dyad of the Valentinian reform, functioning alongside the SECVRITAS REIPVBLICAE type. The scene emphasizes active martial subjugation of frontier barbarians while attributing victory directly to divine favor mediated through the imperial standard, an ideological message engineered to reassure frontier populations in Illyricum and Thrace.

Inscriptions and Epigraphy

The obverse inscription reads D N VALENTINI-ANVS P F AVG, representing an abbreviation of Dominus Noster Valentinianus Pius Felix Augustus. The lettering is broken across the top of the portrait between the letters I and A, providing a clear division that helps numismatists differentiate specific die phases within the reign. On the reverse, the legend reads GLORIA RO-MANORVM, broken symmetrically over the central figure of the advancing emperor. The exergual mark contains the mint signature identifying Thessalonica along with the specific officina letter. The epigraphy utilizes standardized late Roman serifed capitals, engraved with shallow grooves that remained legible despite the rapid pace of engraving and striking required by imperial coin quotas.

Typology and Chronology

Catalogued in Roman Imperial Coinage Volume IX as Thessalonica 16A, this type was produced during the initial joint reign period running from AD 364 until the elevation of Gratian in late summer AD 367. It forms the primary Thessalonian emission of the GLORIA ROMANORVM type dedicated to the senior Augustus, Valentinian I. It corresponds closely to the parallel issues struck concurrently for Valens under RIC IX Thessalonica 16B. Following AD 367, the introduction of Gratian into the imperial college altered mint marks, internal field symbols, and workshop allocations at Thessalonica, marking the closure of the unaugmented 16A series in favor of expanded multi-ruler sequences with distinct secondary field marks such as stars or wreaths.

Circulation and Monetary Life

Coins of RIC IX Thessalonica 16A circulated heavily across the diocese of Macedonia, the Balkans, and adjacent Danubian provinces where military garrisons required vast volumes of small base metal currency. Archaeological excavations and stray find registers demonstrate that GLORIA ROMANORVM AE3 pieces stayed in active circulation for decades, frequently remaining in local markets well into the fifth century alongside subsequent Theodosian AE4 issues. Due to prolonged marketplace wear and the corrosive burial environments typical of copper alloys, surviving specimens often exhibit softened high points on the hair and labarum, edge chipping, and localized patination, yet identifiable exergual marks consistently preserve evidence of their Thessalonian origin.

References

1. The Roman Imperial Coinage, Volume X: The Divided Empire and the Fall of the Western Parts. General Introduction to Base Metal Coinage
2. Online Coins of the Roman Empire: RIC IX Thessalonica 16A. ric.9.thes.16A
3. The Roman Imperial Coinage: Valentinian I - Theodosius I (Vol. IX). pp. 167-176
4. The Roman Imperial Coinage, Volume IX: Valentinian I to Theodosius I. Thessalonica 16A, p. 175