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
Private currency in pre-revolutionary Russia belonged to the city, issued their own "municipal" bons and tokens. With them it was possible to purchase services and goods produced by the government, and in the first place, its water supply. Private currency in pre-revolutionary Russia In Russia, in the second half of the XIX to early XX century limited means of payment got rather widespread among private individuals - owners of commercial firms, shop owners, owners of profitable outlets at clubs. Sometimes the use of surrogate money resulted in a temporary shortage of state paper bills of small denominations and small coins in some region of the