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
Silver Dragon (coin) Silver Dragon (coin) Silver Dragon coins, also sometimes known as Dragon dollars, are silver coins issued by China, Japan and later Korea for general circulation in their own countries. Featuring a dragon on the obverse of Japanese and Korean issues and on the reverse of Chinese issues, all were inspired by the silver Spanish dollar which following its introduction into the region in the 16th Century had set the standard for a de facto common currency for trade in the Far East, this specification being a weight of 27.22 grams and a fineness of .900; the coin thus contained 24.5