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,
Nickel (Canadian coin) this commemorative was halted to preserve nickel for the war effort, resulting in a second non-commemorative 1951 "nickel" made of plated steel. In 1967, all the circulating coins received a special reverse for the Canadian Centennial; the nickel featured a rabbit. In proof sets issued since 1996, the five cent coin is made of sterling silver. Some commemorative five cent coins are also made of sterling silver. Nickel (Canadian coin) The Canadian five-cent coin, commonly called a nickel, is a coin worth five cents or one-twentieth of a Canadian dollar. It was patterned on the corresponding coin in the neighbouring