Julia Mamaea Sestertius, RIC IV Severus Alexander 679

Monetary and Political Context

The monetary system under Severus Alexander (AD 222 to 235) functioned within the framework established by the early empire, though fiscal pressures and creeping inflation increasingly affected state finance. The sestertius remained the premier large base-metal denomination of imperial Rome, valued at one-quarter of a silver denarius or four copper asses. While silver coinage experienced fluctuating fineness and eventual devaluation throughout the third century AD, the sestertius maintained substantial purchasing power in civic commerce, army supply acquisition, and regional market distribution throughout Italy and the western provinces. Following the assassination of Elagabalus in AD 222, the Severan dynastic apparatus relied heavily on Julia Mamaea to steer the young Severus Alexander's administration. As the empress mother, Mamaea exercised immense political authority, holding titles such as Augusta, mater Augusti, and mater castrorum et senatus et patriae. Imperial bronze issues in her name, including RIC IV Severus Alexander 679, were not merely honorific tributes; they represented substantial official coin emissions authorized through the senatorial mint apparatus. These issues reinforced public confidence by associating the regime with domestic harmony, maternal guardianship, and traditional administrative rectitude.

Mint Production and Metrology

The production of RIC IV Severus Alexander 679 occurred exclusively at the central imperial mint of Rome, which retained monopolistic responsibility for regular imperial bronze and brass denominations. Regional provincial mints produced local bronze currencies in the Greek East, but Western civic circulation relied almost entirely on Rome's large-flan sestertii and middle bronzes. During this phase of the Severan dynasty, sestertii were struck primarily on orichalcum (a copper-zinc alloy) or leaded bronze flans. Production standards show a mean weight typically ranging around 19 to 22 grams, with diameters varying between 29 and 32 millimeters, though individual specimens frequently fluctuate below or above these central tendencies due to manual blank-casting techniques and rapid die-striking. Flans were cast in open or two-part molds and frequently display bevelled edges, irregular flan contours, or minor casting sprues before being struck between engraved iron dies. Die alignment for Rome during this era commonly adheres to an irregular or roughly six o'clock (die axis 180 degrees) orientation, reflecting standard Roman workshop practice.

Obverse Design and Portraiture

The obverse of RIC IV Severus Alexander 679 presents a right-facing bust of Julia Mamaea, shown draped and diademed. Her portrait exemplifies the classical revivalism characteristic of Severus Alexander's reign, contrasting with the more dramatic and flamboyant styles seen under Caracalla or Elagabalus. The die engravers rendered Mamaea with mature, dignified facial features, including a prominent profile, straight nose, and calm countenance intended to convey moral gravitas. Her coiffure follows the late Severan palace fashion popularized by Julia Domna and Julia Maesa. The hair is parted in the middle, arranged in crisp, horizontal waves across the temples, and gathered behind into a broad, flat plait or braided bun brought up the back of the cranium. Atop her head rests a diadem (often described numismatically as a stephane), a traditional symbol of imperial rank and divine association for Roman empresses. Her drapery wraps closely across the shoulders, featuring neat, linear fold patterns typical of the Rome mint's primary workshops.

Reverse Iconography and Symbolism

The reverse of the type features Felicitas, the Roman personification of good fortune, public prosperity, and societal well-being. She is depicted draped and seated facing left upon a high-backed throne or chair. In her extended right hand, she supports a winged caduceus, the staff of Mercury symbolizing peaceful commerce, civic harmony, and successful negotiation. Cradled in her left arm is a cornucopiae overflowing with fruits and produce, an explicit emblem of imperial bounty, agricultural abundance, and economic plenty. Flanking the seated deity are the large letters S and C (Senatus Consulto), placed to the left and right fields or in the exergue, signifying that the bronze denomination was struck by decree of the Senate in accordance with long-standing Roman constitutional tradition. The imagery of Felicitas seated conveys stability and grounded permanence, assuring Roman citizens that despite external barbarian incursions on the Rhine and Danube frontiers and renewed conflict with the Sasanian Empire, the inner core of the Roman state enjoyed divine protection and domestic tranquility under the guidance of the Augusta and her son.

Epigraphy and Legends

The obverse inscription reads IVLIA MAMAEA AVGVSTA, curving clockwise around the bust starting from the lower left. This formulaic legend is direct and unadorned, omitting the extended honorific titles such as MATER AVGVSTI ET CASTRORVM found on certain contemporary silver and bronze issues. The brevity of the legend allows the portrait and diadem to dominate the obverse field while affirming her supreme imperial status as Augusta. The reverse inscription reads FELICITAS PVBLICA, surrounding the seated personification, accompanied by S C in the field. The phrase translates to 'Public Happiness' or 'Public Prosperity'. The epigraphy across both faces is executed in clean, classical Roman capitals with well-defined serifs. Lettering is generally regular, although minor spacing adjustments occur depending on the specific die cutter's placement of the caduceus or cornucopiae relative to the circular legend.

Typology and Chronological Classification

Catalogued comprehensively as RIC IV Severus Alexander 679 (Volume IV, Part II of Roman Imperial Coinage) and BMCRE VI 490, this sestertius belongs to the extensive suite of civic and domestic personifications struck for Julia Mamaea throughout the reign. In early numismatic cataloguing, Mamaea's coinage was often grouped broadly between AD 222 and 235 without fine-grained annual subdivisions, because female imperial issues lacked the tribunician numbering (tribunicia potestas) that allows precise yearly dating on emperors' coins. Subsequent hoard studies, stylistic analyses of mint workshops, and portrait typologies developed by Robert Carson and Harold Mattingly suggest that issues reading IVLIA MAMAEA AVGVSTA with the seated Felicitas type were struck in substantial quantities around the middle of the reign, approximately AD 228 to AD 231. The type is closely related to standing Felicitas variants (such as RIC IV Severus Alexander 676 and 678), as well as parallel strikes in silver denarii (RIC IV Severus Alexander 338). Distinguishing RIC 679 from neighboring types rests entirely on the combination of the seated posture of Felicitas, the caduceus and cornucopiae attributes, and the absence of a patera or altar.

Circulation, Hoards, and Archaeological Evidence

Archaeological excavations and numismatic hoard inventories confirm that sestertii of Julia Mamaea circulated heavily across the Roman world. Significant concentrations appear in British, Gallic, Germanic, and Danubian site finds, where high-denomination base-metal coinage was essential for troop payments, market exchange, and tax compliance. In these frontier provinces, sestertii remained in active circulation for decades after their emission, frequently persisting in currency pools into the AD 250s and 260s until the catastrophic debasement of the silver radiate under Gallienus marginalized traditional bronze denominations. Because of their prolonged circulation, surviving specimens of RIC IV Severus Alexander 679 frequently display moderate to heavy surface wear, softening of facial details, and smoothed legends. Many examples found in river deposits or agricultural soils exhibit dark green, brown, or black cuprite and malachite patinas typical of bronze burial environments. The broad survival rate of this type in modern collections reflects both the large original volume of the emission and its vital role in the monetary economy of the later Severan era.

References

1. Coins of the Roman Empire in the British Museum, Vol. VI: Severus Alexander to Balbinus and Pupienus. pp. 162-164, nos. 490-496
2. Roman Coins from the Earliest Times to the Fall of the Western Empire. pp. 145-152
3. Online Coins of the Roman Empire: RIC IV Severus Alexander 679. ric.4.sa.679
4. The Roman Imperial Coinage, Vol. IV, Part II: Macrinus to Pupienus. p. 125, no. 679