Diocletian Bronze Follis RIC VI Heraclea 19a

Monetary Context and Reform

The monetary reforms initiated by Diocletian around 293 to 294 AD sought to restore order to an empire fractured by currency debasement and hyperinflation. The principal base-metal denomination created by this system was the large, silvered bronze coin known modernly as the follis or nummus, classified in traditional 19th-century numismatic catalogues as an AE1. Intended to bridge the transactional gap between high-value gold aurei, new pure silver argentei, and smaller base fractions, the nummus initially carried an intrinsic silver content of roughly three to four percent. RIC VI Heraclea 19a belongs to the early post-reform phase, dating between 297 AD and 298 AD, when the newly established standard maintained a substantial module and hefty theoretical mass, reflecting Diocletian's imperial effort to impose economic stability through uniform token value.

Production and the Heraclea Mint

Heraclea Thracica, formerly Perinthus, served as an essential administrative and military center along the Propontis, operating a key imperial mint that served Diocletian's Balkan and Propontic territories. Production of RIC VI Heraclea 19a was divided across the mint's active numbered officinae, typically designated in exergual marks by Greek numerical letters following the mint prefix SMHT. The flans were cast, prepared, and struck under meticulous imperial oversight to ensure consistent weight standards near ten grams. A thin silver wash was applied chemically or by dipping prior to or during striking, though this superficial surface enrichment has frequently degraded or worn away on surviving archaeological specimens, leaving the bronze-alloy fabric exposed.

Obverse Iconography and Imperial Image

The obverse of RIC VI Heraclea 19a presents a right-facing portrait of Diocletian, rendered with a laurel wreath tied at the nape of the neck. In keeping with the aesthetic program of the First Tetrarchy, the portrait embodies the compact, block-like severity characteristic of early Tetrarchic art. Individual likeness is subsumed into an institutional image of firm resolve, marked by a squared jawline, cropped beard, and deep-set eyes. This standardized imperial portraiture expressed the shared authority and indivisible concord of the collegial emperors, presenting Diocletian as the senior Augustus and principal architect of the restored Roman world order.

Reverse Iconography and Symbolism

The reverse displays the Genius of the Roman People, standing left in a classical contrapposto pose. He is portrayed nude except for a chlamys draped over his left shoulder, wearing a cylindrical modius or calathus upon his head as a symbol of divine bounty and civic plenty. In his extended right hand, Genius holds a patera, libating over an unlit field, while his left arm cradles a full cornucopiae. This composition symbolized the enduring vitality, protection, and collective spirit of the Roman populace, forming the programmatic core of Diocletian's civic propaganda across all major mints of the empire.

Epigraphy and Legend Variations

The obverse inscription reads IMP C C VAL DIOCLETIANVS P F AVG, expanding to Imperator Caesar Caius Valerius Diocletianus Pius Felix Augustus. This full titulature asserts Diocletian's supreme military command, familial adoptions, and imperial pietas. The reverse inscription is dedicated to GENIO POPVLI ROMANI, reading To the Genius of the Roman People. Within the specific classification of RIC VI Heraclea 19a, the reverse legend exhibits minor die breaks or spacing variations, most notably GENIO POPV-LI ROMANI and GENIO POPV-L-I ROMANI. The exergual mintmark confirms production at Heraclea through mint signatures such as SMHT followed by workshop indicators.

Typology and Chronological Placement

Within the typology established by C. H. V. Sutherland in Roman Imperial Coinage volume VI, number 19a marks an unreduced nummus issued between 297 AD and 298 AD for Diocletian as senior Augustus. It stands alongside parallel issues struck simultaneously for Maximian, Constantius I, and Galerius at Heraclea. The type is categorized separately from later Heraclean folles that added field symbols, secondary marks, or reduced weight modules in the early 300s AD. As an exact catalogue type, 19a is distinguished strictly by its specific combination of the full imperial obverse title, laureate head right, uninterrupted field, and the standard Genio reverse.

Circulation and Monetary Life

Following its striking at Heraclea, RIC VI Heraclea 19a circulated extensively throughout Thracia, Moesia, and northern Asia Minor, frequently traveling into neighboring dioceses along major military roads. Because early Tetrarchic nummi possessed a relatively high silver content compared to later debased issues, older heavy folles were often targeted for hoarding or tariffed upward following the Currency Tariff of Aphrodisias in 301 AD and the Edict on Maximum Prices. Over time, successive weight reductions in 307 AD and under the Licinian administration drove many early unreduced specimens from Heraclea into hoards or through official melting and recoining cycles.

References

1. Coinage in the Roman Economy, 300 B.C. to A.D. 700. pp. 148-157
2. Roman Coins. pp. 48-52
3. Online Coins of the Roman Empire: RIC VI Heraclea 19a. ric.6.her.19a
4. The Roman Imperial Coinage, Volume VI: From Diocletian's Reform (A.D. 294) to the Death of Maximinus (A.D. 313). pp. 530-532