Commodus Bronze Sestertius RIC III Commodus 450

Monetary Context and Denominational Role

During the joint and sole reigns of the Antonine dynasty, the sestertius functioned as the premier large-denomination brass coin of the Roman Empire, serving both as an indispensable medium for everyday substantial retail transactions and as a primary visual conduit for imperial messaging. Struck from orichalcum, a copper-zinc alloy often categorized generally as bronze or copper alloy, the sestertius was nominally valued at one quarter of a silver denarius or four copper asses. Under Commodus, the weight and alloy quality of imperial base-metal coinage remained relatively aligned with the standards maintained since Marcus Aurelius, with target weights generally ranging between 20 and 26 grams and diameters commonly spanning 28 to 32 millimeters, though individual specimens display normal manufacturing variance. The large flan of the sestertius provided Roman die engravers with a broad canvas, making it the preferred denomination for intricate mythological and ritual compositions that would appear cramped or illegible on silver denarii or smaller bronze denominations. RIC III Commodus 450 belongs to an ambitious phase of bronze coin production in which the imperial court commissioned detailed tableaux to reassure the Roman populace of the emperor's divine protection, physical recovery, and the enduring welfare of the state.

Production Technology and Mint Attribution

The entire series of RIC III Commodus 450 was manufactured exclusively at the imperial mint of Rome, which exercised centralized control over official base-metal issues sanctioned by the Roman Senate, as signified by the prominent formula S C (Senatus Consulto). Production employed traditional hot striking techniques using heavy iron dies set into anvils and hand-held upper punches. Blanks were cast in individual disc molds or severed from cast sprues before being heated to facilitate the deep relief impressions characteristic of late Antonine sestertii. The intricate nature of the reverse die for this issue, requiring the delicate rendering of miniature statuary, zoomorphic furniture details, a coiled serpent, and arboreal foliage, underscores the presence of master engravers operating within the central urban officinae. Surviving specimens show that dies were cut with meticulous precision, though the complexity of the design meant that slight die misalignments or uneven strikes occasionally obscured the smaller subsidiary elements such as the sphinx on the seat or the miniature statuette atop the column.

Obverse Iconography and Imperial Portraiture

The obverse of RIC III Commodus 450 presents a right-facing, laureate head of Commodus. The portraiture belongs to his early sole reign, portraying the emperor with the characteristic Antonine thick curls of hair and a trimmed beard, echoing the stylistic hallmarks established under his father Marcus Aurelius while developing the heavier facial features associated with his mature likenesses. The laurel wreath, tied at the back of the head with ribbons extending down the nape, symbolizes imperial victory and authority, reinforced contextually by the title BRIT in the legend. Die engravers preserved the smooth, polished modeling of the emperor's cheek and brow, contrasted with the deeply drilled curls of his beard and hairstyle, demonstrating the plastic sculptural style prevailing in Rome during the mid-180s AD.

Reverse Iconography: The Sacred Precinct of Salus

The reverse of this type diverges markedly from regular Antonine personifications through its richly populated sacred setting. Salus is depicted draped and seated facing left upon a low, elaborate throne or seat. The furniture itself is adorned with relief or sculpted supports: on the front appears a miniature figure of Spes advancing with her flower, while a seated sphinx forms another decorative structural element. In her extended right hand, Salus holds a shallow patera, from which she offers nourishment to a serpent rising erect before her. The serpent coils upwards before a dedicated column or pillar, atop which rests a small standing statuette, frequently read by numismatists as Bacchus or Liber holding a thyrsus, though some early commentators suggested Apollo or Hercules. At the column's foot sits a wide cup or sacred vessel, and behind the entire sanctuary group, to the far left of the field, stands a leafy sacred tree. The composition deliberately constructs a complete sacred grove or temple temenos, combining themes of healing, enduring hope, and festive or mystical rejuvenation.

Inscriptions and Epigraphic Analysis

The obverse legend reads M COMMODVS ANTON AVG PIVS BRIT, rendered clockwise along the border. This formula records the imperial nomenclature: Marcus Commodus Antoninus Augustus, accompanied by the honorary titles Pius (Pious) and Britannicus (Conqueror of Britain). The reverse inscription is arranged in two distinct parts: the overarching legend SALVS P M TR P X IMP VII COS IIII P P, running around the upper circumference, and the senatorial authorization S C placed in the lower field and exergue. The titular abbreviation denotes Pontifex Maximus (supreme pontiff), Tribunicia Potestate X (in his tenth year of tribunician power), Imperator VII (acclaimed military victor for the seventh time), Consul IIII (consul for the fourth time), and Pater Patriae (father of his country). Together, the legends integrate strict chronological markers with explicit theological messaging, placing the imperial titles under the divine patronage of Salus.

Typology and Absolute Chronology

The dating of RIC III Commodus 450 is established with high precision through the epigraphic conjunction of TR P X and IMP VII. Commodus received his tenth tribunician power in late autumn AD 184 (customarily renewed on December 10, AD 184) and held it through the autumn of AD 185. His seventh imperatorial acclamation was voted in late AD 184 following the settlement of the northern British campaigns under Ulpius Marcellus, which likewise yielded his formal adoption of the victory title Britannicus late in AD 184. Consequently, this sestertius can be firmly dated between late AD 184 and late AD 185. Within the broader typology of Commodus's coinage, this issue represents one of several specialized narrative reverses struck during his fourth consulship, contrasting sharply with the simpler standing Salus designs commonly used on standard denarii and smaller bronzes during the same tribunician period.

Circulation, Wear Patterns, and Preservation

Like other Antonine sestertii, coins of type RIC III Commodus 450 circulated broadly across the Italian peninsula and the western provinces of the Roman Empire, passing through hands in civilian trade and administrative payments. Because large base-metal coins remained in active commercial circulation for decades, surviving specimens frequently show considerable friction wear across the high relief points of the emperor's portrait and Salus's drapery. Because the intricate details of the reverse, such as the miniature sphinx, the Spes carving, and the tiny statuette atop the column, were cut in shallower relief than the primary figure, moderate surface circulation wear often reduces these nuanced elements to faint silhouettes. Hoard evidence from western Europe confirms that Antonine sestertii remained in use well into the third century AD until the severe monetary debasements of the mid-third century led to the abandonment of heavy orichalcum coinage.

References

1. Coins of the Roman Empire in the British Museum, Volume IV: Antoninus Pius to Commodus. p. 798, no. 560
2. Roman Coins from the Earliest Times to the Fall of the Western Empire. pp. 148-156
3. Online Coins of the Roman Empire: RIC III Commodus 450. ric.3.com.450
4. The Roman Imperial Coinage, Volume III: Antoninus Pius to Commodus. p. 416, no. 450
5. Die Münzprägung des Kaisers Commodus. Moneta Imperii Romani 18