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
Three halfpence (English coin) Tower Mint. The three-halfpence coin closely resembles the English Three Farthing coin and the Threepence coin, which differed only in the diameter. This is 16 millimetres in an unclipped coin, compared to 14 mm for the three-farthings, and 19 mm for the three pence (except 1561, which was 21 mm). No three-halfpences were produced after 1582, probably because under both James I and Charles I large quantities of halfpennies and farthings were produced. Three halfpence (English coin) The English three halfpence, a silver coin worth d, was introduced in Elizabeth I of England's third and fourth coinages (1561–1582) as part