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,
Gold coin other alloys. Furthermore, many countries continue to make legal tender gold coins, but these are primarily meant for collectors and investment purposes and are not meant for circulation. Many factors determine the value of a gold coin, such as its rarity, age, condition and the number originally minted. Most gold coins minted since the late 19th century are worth slightly more than spot price, but many are worth significantly more. Gold coins coveted by collectors include the Aureus, Solidus and Spur Ryal. In July 2002, a very rare $20 1933 Double Eagle gold coin sold for a record $7,590,020 at