As (Roman Coin) - Republican Era Coinage

Republican Era Coinage

The as was introduced in ca. 280 BC as a large cast bronze coin during the Roman Republic. The following fractions of the as were also produced: the bes (2/3), semis (1/2), quincunx (5/12), triens (1/3), quadrans (1/4), sextans (1/6), uncia (1/12, also a common weight unit), and semuncia (1/24), as well as multiples of the as, the dupondius (2), sestertius (2.5), tressis (3), quadrussis (4), quinquessis (5), denarius (10), antoninianus (20) and aureus (25)

After the as had been issued as a cast coin for about seventy years, and its weight had been reduced in several stages, a sextantal as was introduced (meaning that it weighed one-sixth of a pound). At about the same time a silver coin, the denarius, was also introduced. Earlier Roman silver coins had been struck on the Greek weight standards that facilitated their use in southern Italy and across the Adriatic, but all Roman coins were now on a Roman weight standard. The denarius, or 'tenner', was at first tariffed at ten asses, but about 140 B.C. it was retariffed at sixteen asses. This is said to have been a result of financing the Punic Wars.

During the Republic, the as featured the bust of Janus on the obverse, and the prow of a galley on the reverse. The as was originally produced on the libral and then the reduced libral weight standard. The bronze coinage of the Republic switched from being cast to being struck as the weight decreased. During certain periods, no asses were produced at all.