2-10. Constantine’s Coinage Crisis
Constantine was forced to handle afresh the tangled problem of the currency. The task was rendered especially difficult by the fresh debasement of coinage which was perpetrated by Maxentius while he was supreme in Italy. It may be said at once that the goal of Diocletian's efforts was never reached by Constantine. He did indeed alter the weight of the gold piece, which now received the name of solidus, and it continued in circulation, practically unchanged, for centuries. But this gold piece was to all intents and purposes not a coin, for when payments were made in it, they were reckoned by weight. The solidus was in effect only a bit of bullion, the fineness of which was conveniently guaranteed by the imperial stamp.
The same is true of Constantine's silver pieces. The only coins which could be paid and received by their number, without weighing, were those contained in the folles, of which mention was made above, and the word follis was now applied to the individual coins, as well as to the whole sack. It had proved to be impossible to restore the monetary system which had prevailed in the first and second centuries of the Empire. But the tide of innovation was at length stayed; and this in itself was no small boon.
The line taken by the reform of Diocletian in the scheme of taxation was partly marked out for him by the anarchy of the third century, which led to the great debasement of the coinage described above and to many oppressive exactions of an arbitrary character. The lowering of the currency had disorganised the whole revenue and expenditure of the government. Where dues were receivable or stipends payable of a fixed nominal amount, these had largely lost their value. A natural consequence was that payments both to be made and to be received were ordered by Diocletian to be reckoned in the produce of the soil, and not in coin.
During the era of confusion a phrase, indictio, had come into use to denote a special requisition made upon the provincials over and above their stated dues. What Diocletian did was to make what had been irregular into a regular and general impost, subjecting all provincials to it alike, and abolishing the unequal tributes of different kinds which had been previously required. The result was an enormous levelling of taxation throughout the provinces. And to some extent the immunity of Italy itself was withdrawn. But the sum to be raised from year to year was not uniform. It depended on an announcement to which the word indictio was applied, issued by the emperor for each year. Hence the number of indictiones proclaimed by an emperor became a convenient means for denoting the years of his reign.
To obtain a deluxe leatherbound edition of THE CAMBRIDGE HISTORY OF THE BYZANTINE EMPIRE, subscribe to Castalia History.