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
Twopence (British pre-decimal coin) below and to the right. Above, on the rim, is incused the word , and on the rim below the image is incused the date . The reverse was also designed by Kuchler. The word appears next to the shield, indicating that the coin came from the Soho Mint. Twopence (British pre-decimal coin) The pre-decimal twopence (2d) was a coin worth one one-hundred-and-twentieth of a pound sterling, or two pence. It was a short-lived denomination, only being minted in 1797 by Matthew Boulton's Soho Mint. Before Decimal Day in 1971, two hundred and forty pence equaled one pound sterling. Twelve