The As (coin) reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

As (coin)

The as is a small copper ancient Roman coin valued at 1/4 of a sestertius and 1/16 of a denarius. It was the smallest denomination in common circulation during the Roman Empire.

Although often only slightly smaller than the dupondius, which is valued at 2 to the sestertius, the as is worth half as much. This is due to the composition of each coin; the dupondius was made of a golden bronze alloy while the as was made of reddish copper. The dupondius usually featured the emperor wearing a radiate crown, indicating that it was worth twice as much as the as.

See also: Roman currency.

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