Non-decimal currency Non-decimal currency A non-decimal currency is a currency that has sub-units that are a non-decimal fraction of the main unit, i.e. the number of sub-units in a main unit is not a power of 10. Today only two countries in the world use non-decimal currencies. Both of these countries are in Africa. These are Mauritania (1 ouguiya = 5 khoums) and Madagascar (1 ariary = 5 iraimbilanja). However these are only theoretically non-decimal, as in both cases the value of the main unit is so low that the sub-unit is too small to be of any practical use and coins
Australian pound banknotes. This uncirculated Australian Pound (£1) note, with the serial number (red-ink) P000001, was the first piece of currency to carry the Coat of Arms of Australia. In February 1959 the Commonwealth Government appointed a Decimal Currency Committee to investigate the advantages and disadvantages of a decimal currency, and, if a decimal currency was favoured, the unit of account and denominations of subsidiary currency most appropriate for Australia, the method of introduction and the cost involved. The Committee presented its report in August 1960. It recommended the date of introduction of the new system to be the second Monday in