Denarius Debasement of the coin's silver content continued after Nero. Later Roman emperors reduced its content to 3 grams around the late 3rd century. The value at its introduction was 10 asses, giving the denarius its name, which translates as "containing ten". In about 141 BC, it was re-tariffed at 16 asses, to reflect the decrease in weight of the as. The denarius continued to be the main coin of the Roman Empire until it was replaced by the antoninianus in the middle of the 3rd century. The coin was last issued, in bronze, under Aurelian between AD 270 and 275,
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