Financial rand during 1984–1985 were largely the result of economic sanctions in response to apartheid. At the same time, the government enacted the exchange controls. Investments in South Africa by foreigners could only be sold for financial rand. The financial rand system provided for two exchange rates for the rand — one for current account transactions and one for capital account transactions for non-residents. Investments made in South Africa by non-residents could only be sold for financial rand, and limitations were placed on the convertibility of financial rand into foreign currencies. Financial rand had the ISO 4217 currency code ZAL. Financial rand
Currency substitution On the other hand, currency substitution leads to the loss of seigniorage revenue, the loss of monetary policy autonomy, and the loss of the exchange rate instruments. Seigniorage revenues are the profits generated when monetary authorities issue currency. When adopting a foreign currency as legal tender, a monetary authority needs to withdraw the domestic currency and give up future seigniorage revenue. The country loses the rights to its autonomous monetary and exchange rate policies, even in times of financial emergency. For example, former chairman of the Federal Reserve Alan Greenspan has stated that the central bank considers the effects of