The Age of Multiple Rulers
Late Antique Rome knew not just one emperor – it knew many. The system of Tetrarchy (rule by four emperors) introduced by Diocletian divided the empire among two senior emperors (Augusti) and two junior emperors (Caesares). This political construct produced a wealth of different coinages – and on many of them, a mysterious abbreviation is found: NOB C.
What does NOB C mean?
NOB C stands for Nobilissimus Caesar – "the noblest Caesar." This title designated the chosen successor, the junior emperor in the Tetrarchic system. He was not a full Augustus, but far more than an ordinary prince: an emperor in waiting, minted on copper and bronze, circulated throughout the entire Roman Empire.
On coins, NOB C typically appears in the legend of the obverse (front) – around the emperor's head portrait, for example as CONSTANTINVS NOB C or LICINIVS NOB C. The reverse, however, shows gods or slogans such as IOVI CONSERVATORI. These mintages mostly date from 306–324 AD, the most turbulent phase of the Late Antique emperorship.
Constantine and Licinius – Rivals and Allies
The history of the junior emperors is inextricably linked with two names: Constantine I and Licinius I.
Constantine (later "the Great") was proclaimed Augustus by his troops in Eboracum (York) in 306 AD – contrary to Tetrarchic protocol. His rise was a break with the system, which he legitimized through political skill and military victories. The famous Battle of the Milvian Bridge (312 AD) against Maxentius made him ruler of the West.
Licinius I ruled the East of the Empire. He was directly appointed Augustus in 308 AD – without ever having held the rank of Caesar. As an ally of Constantine, he signed the Edict of Milan in 313 AD, which granted religious freedom to Christians. But the unity did not last. After years of mistrust and open conflict, Constantine finally defeated Licinius I in 324 AD – and became sole ruler.
Coins as Witnesses to the Power Struggle
The coins of this era are direct documents of the political power structure. The following types are particularly insightful:
- CONSTANTINVS NOB C: Early mintages of Constantine as Caesar, before his ascent to Augustus. Particularly sought after by collectors as they document the early career of the later great emperor.
- LICINIVS NOB C: Mintages of Licinius II (the emperor's son) during his time as junior emperor. These coins reflect the brief window of Tetrarchic legitimacy.
- IOVI CONSERVATORI: Jupiter as "conservator god" – the patron motif of the Tetrarchic emperors on bronze coins, which were minted in mass production and are still frequently found today.
- VOT PR / VOTIS PVBLICIS: Votive inscriptions on coins documenting public prayers for the welfare of the emperor.
The Mints of the Late Antique Empire
Under the Tetrarchy, the Roman coinage system was decentralized. Instead of a central mint, numerous regional mints emerged – each with its own distinguishing mark (Mintmark):
- ALEX – Alexandria (Egypt)
- ANT – Antioch (Syria)
- SIS – Siscia (Croatia)
- TR – Trier (Germany)
- LON – London (Britain)
The mintmark on the reverse of a coin extends its history: it shows where the coin was made, under which emperor, and in which workshop (Officina). A small detail – with enormous historical significance.
Numismatics of Late Antiquity – an Underestimated Era
While early imperial coins (Augustus, Nero, Hadrian) are considered absolute top collector's items, Late Antique bronze coins are often underestimated. Yet, they offer unique advantages:
- Affordability: Well-preserved Folles and AE3 coins are often available at moderate prices.
- Historical Density: Every coin of this era represents a political event – wars, changes in religion, dynastic changes.
- Iconographic Variety: Sol Invictus, Jupiter, Labarum (Constantine's Christian standard) – the imagery of these coins reflects the transition from paganism to Christianity.
A Late Antique Coin in Your Collection
To hold an original bronze coin from the time of Constantine or Licinius means to hold a piece of perhaps the most dramatic power struggle of antiquity – minted in a time when Christianity became the state religion, when emperors waged war against each other, and when the Roman Empire experienced its last flourish.
At Nautilus Natural History, we offer carefully selected, authentic Roman coins from Late Antiquity – with full identification, mintmark analysis, and certificate of authenticity.
Conclusion
The coins of Constantine and Licinius are far more than ancient small change – they are documents of an era in upheaval. The NOB C on these coins is not just a title: it is the sign of a system that was to change the world – and whose legacy is still palpable in our civilization today.
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