Roman Imperial Currency - Authority To Mint Coins

Authority To Mint Coins

Unlike most modern coins, Roman coins had (at least in the early centuries) intrinsic value. However, while the gold and silver issues contained precious metals, the value of a coin was slightly higher than its precious metal content, so they were not, strictly speaking, bullion. Also, over the course of time the purity and weight of the silver coins were reduced. Estimates of the value of the denarius range from 1.6 to 2.85 times its metal content, thought to equal the purchasing power of 10 modern British Pound Sterling (US$15) at the beginning of the Roman Empire to around 18 Pound Sterling (US$29) by its end (comparing bread, wine and meat prices) and, over the same period, around one to three days' pay for a Legionnaire.

The coinage system that existed in Egypt until the time of Diocletian’s monetary reform was a closed system based upon the heavily debased tetradrachm. Although the value of these tetradrachmas can be reckoned as being equivalent in value to the denarius, their precious metal content was always much lower. Clearly, not all coins that circulated contained precious metals, as the value of these coins was too great to be convenient for everyday purchases. A dichotomy existed between the coins with an intrinsic value and those with only a token value. This is reflected in the infrequent and inadequate production of bronze coinage during the Republic, where from the time of Sulla till the time of Augustus no bronze coins were minted at all; even during the periods when bronze coins were produced, their workmanship was sometimes very crude and of low quality.

Later, during the Roman Empire, there was a division in the authority of minting coins of particular metals. While numerous local authorities were allowed to mint bronze coins, no local authority was authorized to strike silver coins. On the authority to mint coins Dio Cassius writes, "None of the cities should be allowed to have its own separate coinage or a system of weights and measures; they should all be required to use ours." Only Rome itself struck precious metal coinage, and the mint was centralized in the city of Rome during the Republic and during the early centuries of the Empire. Some Eastern provinces struck coins in silver, but these coins were local denominations that were intended to circulate and to fill only a local need. The issue of bronze coins can be interpreted to be of little value, and of little importance to the central government of Rome, since expenditures of the state were large and could be more easily paid with coins of high value. It is known that during the first century AD an as could only buy a pound of bread or a litre of cheap wine (or according to Pompeiian graffiti, the services of a cheap prostitute). The importance and the need for smaller denominations for the population of Rome was probably high. Evidence of this can be seen in the numerous imitations of imperial Claudian bronzes that, although probably not authorized by Rome, appear to have been tolerated and were struck in large numbers. Since the government required coins mainly as a means to pay its army and officials, it had little impetus or desire to fulfill the need for bronze coins.