Exchange Rate.
demonetisation
Foreign exchange rates are currency exchange value of other countries.
pegged exchange rate is officially fixed in terms of gold or any other currency in foreign exchange. Floating exchange rate is flexible rate in which value of currency is allowed to adjust freely determined by the supply & demand of foreign exchange
can cause fluctuations in the exchange rate between its currency and foreign currencies.
Central banks use reserves in 2 ways: 1) They acquire (buy) foreign currency, often US Dollars, with their currency to keep their currency relatively weak and so enhance exports. This is what the US is acusing China of doing. 2) They use their foreign reserves to buy their own currency and support if from falling in value. This is what happened, with limited temporary success and eventual failure in Asian currencies, such as the Thai Baht, in 1997.
In terms of value it all boils down to supply and demand.
In a pegged/fixed exchange rate system the value of currency is fixed in terms of gold or the value of other currency.This value is the parity value of the currency
Foreign currency translation is calculated by multiplying the foreign currency amount by the exchange rate. The exchange rate is the value of one currency in terms of another currency, and it can be obtained from financial markets or from central banks. The resulting product is the translated amount in the reporting currency.
The foreign currency against domestic currency is the buying and selling
An appreciation in a foreign currency creates a foreign exchange gain when the foreign currency is to be received. A decrease in the value of foreign currency creates a foreign exchange gain when the foreign currency is to be paid. (Hoyle, Schaefer, Doupnik, 2009, pp. 328)
Foreign currency is calculated using the average market value of the currency over a 24 hour period and then comparing that value to other currencies. This is why exchange rates can vary from day to day.
currency is subject to price fluctuation. A company could lose money if the value of the foreign currency is reduced before it can be exchanged into the desired currency
ask.com
demonetisation
Foreign exchange rates are currency exchange value of other countries.
A wide variety of foreign money is exchanged. It really depends on what currency is being used, and how much of that currency is being used, and the value of that particular currency.
To find the value of foreign currency from the WWII era, you can try taking it to an antiques dealer. They may be able to appraise it for you or refer you to someone who can.