Julia Mamaea Silver Denarius, RIC IV Severus Alexander 360

Monetary Context

The coinage of Severus Alexander (AD 222 to 235) represents a period of conservative stabilization in the Roman imperial monetary system following the volatility of the preceding Severan reigns. Caracalla had introduced the radiate antoninianus in AD 215 as a nominal double denarius containing only about one and a half times the silver of a regular denarius. Under Severus Alexander, imperial monetary policy discontinued the production of the radiate coin, making the standard laureate denarius once again the sole silver coin struck in massive quantities for state payments, bureaucratic salaries, and military expenditures. Concurrently, the intrinsic quality of the denarius stabilized, maintaining a median weight between 2.8 and 3.2 grams and a silver fineness of approximately 40 to 45 percent. Within this monetary landscape, coinages struck for female members of the dynasty played an indispensable ideological role. Because Severus Alexander attained the purple at only thirteen years of age, imperial legitimacy was closely tied to his mother, Julia Avita Mamaea, who held the rank of Augusta. The imperial treasury channeled significant bullion into denarii struck in her name, circulating alongside those of the emperor to project an image of familial stability, piety, and dynastic endurance across the provinces.

Production and Mints

The entire regular issue of RIC IV Severus Alexander 360 was manufactured at the central mint of Rome. By the AD 220s, the Rome facility operated as a sophisticated industrial establishment structured into multiple distinct workshops, or officinae, which divided production between issues for the emperor and those dedicated to the imperial women. Production of the denarius involved melting silver alloys of regulated fineness, casting circular flans, and striking them manually between engraved bronze dies. The dies for Julia Mamaea show exceptional technical consistency, featuring well-centered portraits and clean lettering executed by seasoned engravers. Flan preparation often produced minor irregularity in rim thickness and occasional edge fissures under the impact of striking, which was typical for mid-third-century Roman minting practice. Die axes are typically oriented close to six o'clock or twelve o'clock, reflecting the semi-regularized alignment maintained by Rome mint celators. Metallurgical analyses of contemporary Rome denarii demonstrate a controlled debasement process, where copper was alloyed with silver to stretch the state's precious metal supplies while preserving a bright, silvery appearance on freshly struck pieces through superficial chemical blanching.

Obverse Iconography

The obverse of RIC IV Severus Alexander 360 features a right-facing bust of Julia Mamaea, shown diademed and draped. The portraiture embodies the refined, sober style developed by Rome mint engravers during the reign of Severus Alexander, contrasting with the more dramatic representations seen under Caracalla. The Augusta is depicted with mature, dignified facial features, an aquiline nose, and a composed expression that conveyed maternal authority and moral rectitude. Her hair is arranged in the characteristic Severan court style: waved horizontally across the head in neat parallel ridges, turned upward at the nape, and braided into a broad plait secured flat against the back of the crown. Surmounting the coiffure is a crescent-shaped diadem, the traditional badge of female imperial status. Her drapery covers the shoulders and chest in graceful folds, often revealing the collar of an undergarment. This iconography emphasized sobriety, traditional Roman feminine dignity, and her elevated constitutional position as the mother and guide of the young princeps.

Reverse Iconography

The reverse depicts Vesta, the ancient Roman goddess of the domestic hearth and civic fire, standing facing left. She is fully draped in a stola and veiled, conforming to the traditional visual representation of the deity as an emblem of sacred purity and modest matronly conduct. In her outstretched right hand, Vesta holds the palladium, a diminutive archaic statuette of the goddess Pallas Athena armed with spear and shield. According to Roman founding mythology, the palladium had been rescued by Aeneas from the ruins of Troy and preserved within the Temple of Vesta in the Forum Romanum as an eternal pledge of the empire's security. In her left hand, Vesta holds a tall, upright sceptre resting against the ground, an attribute underscoring divine majesty and authority. By pairing Julia Mamaea with Vesta and the palladium, the coin linked the living empress mother to the ancient guardian of Roman state survival, implying that the maternal vigilance of the Augusta guarded the imperial house just as Vesta guarded Rome.

Inscriptions and Epigraphy

The inscriptions on RIC IV Severus Alexander 360 are concise, utilizing clear and classical Latin epigraphy. The obverse legend reads IVLIA MAMAEA AVG, punctuated without word dividers. This formula abbreviates the title Augusta as AVG, presenting her official legal designation as imperial consort and mother without excessive epithets. Unlike the male imperial titles of Severus Alexander, which frequently recorded tribunician power iterations, consulships, and imperatorial acclamations, female coin legends were unburdened by constitutional offices, focusing strictly on personal identity and imperial rank. The reverse legend consists solely of the single word VESTA, arranged in an arc along the upper border of the field. The lettering is cleanly cut, with standard third-century letterforms such as open-topped A characters and compact S curves. The extreme brevity of the reverse legend directs immediate attention to the personification herself, relying on the immediate recognition of Vesta's sacred name to convey its religious and patriotic message.

Typology and Chronology

In the standard classification established by Harold Mattingly and Edward Sydenham in The Roman Imperial Coinage, this type is catalogued as RIC IV Severus Alexander 360. In the British Museum catalogue, it corresponds to BMC RE VI 381. Because the coin carries no dated tribunician numbers or consular references, its chronological placement relies on stylistic criteria, hoard composition, and portrait development within the coinage of Julia Mamaea. Scholars broadly date the issue between AD 225 and 235, placing it primarily in the middle and later phases of Severus Alexander's reign. During the initial years of the reign (AD 222 to 224), Mamaea was depicted with slightly softer, youthful features, often accompanied by the title Mater Augusti. From AD 225 onward, following the marriage and subsequent exile of Orbiana, Mamaea held uncontested supremacy at court, and her coinage expanded into broad typological series celebrating virtues such as Fecunditas, Felicitas, Juno Conservatrix, and Vesta. Type 360 forms part of this sustained production phase, remaining in production until the assassination of the emperor and his mother near Mogontiacum in AD 235.

Circulation and Monetary Life

Denarii of type RIC IV Severus Alexander 360 enjoyed extensive circulation throughout both the western and eastern provinces of the Roman Empire. Archaeological evidence from major coin hoards found across Roman Britain, Gaul, the Rhine-Danube frontier, and the Levant demonstrates that issues of Julia Mamaea were absorbed into military and civilian currency streams alike. Because Severus Alexander struck no regular antoniniani, these denarii remained the workhorse of everyday transactions requiring silver coin. The type continued to circulate long after AD 235, surviving in currency pools through the reigns of the barracks emperors until the late 250s and 260s. During the rapid monetary inflation of the mid-third century, older Severan denarii were progressively hoarded or melted down because their 40 to 45 percent silver content made them significantly more intrinsically valuable than the increasingly debased antoniniani of Gallienus and Claudius Gothicus. Many preserved specimens show extensive wear and occasional edge nicks from prolonged market circulation, while others were preserved in hoards concealed during the military crises of the AD 250s.

References

1. Coins of the Roman Empire in the British Museum, Volume VI: Severus Alexander to Balbinus and Pupienus. pp. 154-156, no. 381
2. Coinage in the Roman Economy, 300 B.C. to A.D. 700. ch. 6, pp. 125-132
3. The Roman Imperial Coinage, Volume IV, Part II: Macrinus to Pupienus. pp. 98, 126, no. 360
4. Online Coins of the Roman Empire: RIC IV Severus Alexander 360. Type record ric.4.sa.360