Roman Coins: The Monetary System of Ancient Rome
The ancient Romans were innovative people, and their economic system was no exception. Roman coins were an integral part of Roman culture and economy: acting both as tools of trade and expressions of art. Centuries later, Roman currency serves as a time capsule into ancient history, giving us a glimpse into the culture of Ancient Rome.
Currency evolved through the many decades of Roman society. Before the introduction of metal coins, Roman economy was based largely on bartering, commonly using cattle as a method of trade. The first form of coinage was introduced during the era of the Roman Republic: a unique type of money that couldn't be found in other parts of the Mediterranean. Coinage began as three distinct monetary systems: 1.) aes signatum (stamped bronze), a rectangular piece of bronze ingot that weighed around 3.3 lbs (1.5 kg), 2.) Romano-Campanian, true stuck coins, and 3.) aes grave, small cast bronze discs.
Under the reign of Julius Caesar, significant progress was made to the economic system. Caesar issued coins bearing his own portrait, marking one of the first instances in Roman history where a living individual was depicted on coinage.
Roman Coin Denominations
Quadrans: the smallest denomination, worth one quarter of an as. The quadrans was issued from the beginning of cast bronze coins during the Roman Republic, and was used for simple transactions like buying olives or paying an entrance fee to a boathouse.
Semis: twice the value of a quadrans, worth half an as. During the Roman Republic, the semis was distinguished by its pattern of an S or six dots. It was used for purchasing things like a loaf of bread or a tunic.
As: the basic unit of currency made initially of bronze, and later of copper. The as was used for everyday needs like buying vegetables or paying a repairman for home repairs.
Dupondius: a brass coin valued at two asses, the dupondius could be used to pay tolls, taxes, and small purchases at markets.
Sestertius: introduced in 211 BCE as a small silver coin, the sestertius became increasingly important during the Roman Empire, when it was reintroduced as a large brass coin. The sestertius was valued at four asses, serving as the primary coin for everyday transactions such as paying artisans to attending public sporting events.
Quinarius: a small silver coin valued at one half of a denarius, the quinarius remained relatively unused in comparison to other coins. It might have been used for purchases relating to the military, or for small specialized transactions.
Denarius: the standard Roman coin from its introduction in the Second Punic War in 211 BCE to the reign of Gordian III 244 CE, the denarius was a high-quality silver coin worth ten asses. It facilitated trade, funded military campaigns, and served as the standard coin for tax collection. In 215 CE, the denarius was gradually replaced by the antoninianus: a silver coin that eventually grew worthless due to inflation and demand.
Aureus: a prestigious golden coin, the aureus served as a symbol of the emperor's status and wealth. It was reserved mostly for large payments or lavish gifts, eventually replaced during the late Roman Republic by a pure gold coin called the solidus.