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64-274 CEReputable source · 2 sourcesWell documented

Rome Debases the Denarius Into Worthlessness

A silver coin loses 90 percent of its precious-metal content over two and a half centuries, and prices explode

On the timeline · around 64-274 CE · Coinage and Ancient FinanceCoinage and Ancient FinanceRome Debases the Denarius Into Worthlessness300 BCE200 BCE100 BCE1 CE100 CE200 CE300 CE400 CE

Quick facts

Denarius fineness under Augustus
c. 95-98 percent silver
Fineness under Septimius Severus
c. 50 percent
Antoninianus introduced
215 CE, by Caracalla
Estimated price rise in worst-hit regions
c. 1,000 percent

What happened

Rome's silver denarius held a fineness near 98 percent under Augustus, but successive emperors reduced its precious-metal content to cover state expenses without raising taxes directly. World History Encyclopedia records the silver content held roughly steady through Nero's reign but had fallen to about 80 percent fineness by the time of Marcus Aurelius and Commodus a century later, and to about 50 percent under Septimius Severus in the early 200s CE. In 215 CE Caracalla introduced a new coin, the antoninianus, officially valued at two denarii but containing only about 1.5 times the silver, a debasement that itself fed inflation as prices rose to compensate. By the mid-200s CE Rome had effectively abandoned silver coinage altogether, and prices in many parts of the empire rose by roughly 1,000 percent during the resulting collapse of confidence in the currency.

Why it matters

Roman debasement is one of history's clearest demonstrations that a currency's value depends on trust in what backs it, not merely on its face value: as emperors quietly reduced the silver in each coin to stretch limited bullion reserves, the public responded with the price increases that any debasement eventually produces, and small landholders lost property to larger landowners as the crisis deepened, a pattern of consequences later debasements and inflations would repeat.

How we know

Surviving Roman coins from every reign have been assayed for their precious-metal content by numismatists and metallurgists, producing a well-documented, coin-by-coin record of exactly how and when the denarius's silver content fell.

Sources

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Rome Debases the Denarius Into Worthlessness · History of Money · SourcedStory