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
Half crown (Irish coin) Half crown (Irish coin) The half crown (2s 6d) () coin was a subdivision of the pre-decimal Irish pound, worth of a pound. The half crown was commonly called "two and six" due to its value of two shillings and sixpence (indicated on the coin itself as '2s 6d'). The original minting of the coin from 1928 to 1943 contained 75% silver, a higher content than the equivalent British coin. The silver coins were quite distinguishable as they had a whiter appearance than the later cupronickel variety minted from 1951. The silver coins wore less well. The subsequent cupronickel coin