2011 $1 Ram's Head 'C' Mintmark Silver Proof CoinBefore the introduction of decimal currency, the sheaves of wheat illustrated on the threepence and the Merino ram on the shilling expressed Australias pastoral spirit. Echoing the design of the pre decimal shilling, the coin features the dignified Merino ram, which represents Australias reliance on primary industry throughout its economic history. On this beautiful piece, the one shilling text has been replaced by the words one dollar.