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,
Silver coin US circulating coins the US Mint made special commemorative coins minted for sale to coin collectors and, starting in 1986, bullion coins primarily sold to investors. Both types, although legal tender, are not expected to circulate for commerce. Various governments mint, or authorize the minting of, silver bullion coins with a nominal face value in the national currency. The face value is nominal because the value stated on the coin is much less than the value of the silver in the coin. The most common world silver bullion coins, preceded by minimum guaranteed purity, and ordered by their year of