As (Roman coin) as, the (2), (2), . After the as had been issued as a cast coin for about seventy years, and its weight had been reduced in several stages, a 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 in
As (Roman coin) 14th century. It was a low-quality flat copper coin, weighing ca. 3–4 grams and forming the lowest denomination of contemporary Byzantine coinage, being exchanged at 1:768 to the gold "hyperpyron". It appears that the designs on the "assarion" changed annually, hence they display great variations. The "assarion" was replaced in 1367 by two other copper denominations, the "tournesion" and the "follaro". As (Roman coin) The (plural ), occasionally assarius (plural assarii, rendered into Greek as , assarion) was a bronze, and later copper, coin used during the Roman Republic and Roman Empire. The Romans replaced the usage of Greek coins,