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denarius

ancient Roman unit of weight and coin
Also known as: pennyweight

Quick Summary

The denarius was a silver coin of ancient Rome, first issued around 211 BC. It was marked with an 'X', signifying its value of 10 bronze asses. The denarius quickly became the primary currency in the central and western Mediterranean.1

Initially weighing less than the earlier quadrigati, the denarius featured a head of Roma on the obverse and the Dioscuri (Castor and Pollux) with the inscription ROMA on the reverse. Its value in terms of bronze was later revalued to 16 asses. The denarius was also the basis for the gold aureus, which was equal to 25 silver denarii. The term "denarius" itself is sometimes associated with "god's penny" in New Latin.123

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