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
Denarius dinar currency. Its symbol is represented in Unicode as 𐆖 (U+10196), however it can also be represented as X̶ (capital letter X with combining long stroke overlay). A predecessor of the "denarius" was first struck in 267 BC, five years before the First Punic War, with an average weight of 6.81 grams, or of a Roman pound. Contact with the Greeks prompted a need for silver coinage in addition to the bronze currency that the Romans were using at that time. The predecessor of the "denarius" was a Greek-styled silver coin called the "didrachm" which was struck in Neapolis and