Numismatics (ancient Greek: νομισματική) is the scientific study of money and its history in all its varied forms. While numismatists are often characterized as studying coins, the discipline also includes a much larger study of payment media used to resolve debts and the exchange of goods.
Exonumia is the study of coin-like objects such as token coins and medals, and other items used in place of legal currency or for commemoration. Notaphily is the study of paper money or banknotes. Scripophily is the study and collection of stocks and Bonds. Numismatics is an ancient discipline, reaching as far back as Julius Caesar, who is often credited with writing the first book on numismatics. It can include the study of many different aspects relating to coins, including history, geography, economics, metallurgy, usage, and manufacturing processes.
Economic and historical studies of money's use and development are separate to the numismatists' study of money's physical embodiment (although the fields are related; economic theories of money's origin depend upon numismatics, for example).
During the third century, the denarius was replaced by the double denarius, now usually known as the antoninianus or radiate, which was then itself replaced during the monetary reform of Diocletian which created denominations such as the argenteus (silver) and the follis (silvered bronze). After the reforms Roman coinage consisted mainly of the goldsolidus and small bronze denominations. This trend continued to the end of the Empire in the West.
The ten-baht coin is very similar to the two–euro coin in size, shape and weight and likewise consists of two different alloys. Vending machines that are not equipped with an up-to-date coin-checking system might therefore accept them as €2 coins.
Error - Usually a mis-made coin not intended for circulation, but can also refer to an engraving or die-cutting error not discovered until the coins are released to circulation. This may result is two or more varieties of the coin in the same year.
Exonumia is the study of coin-like objects such as token coins and medals, and other items used in place of legal currency or for commemoration.
Fineness - Purity of precious metal content expressed in terms of one thousand parts. 90% is expressed as .900 fine.
January 1, 2008 Venezuela launched a new currency with the new year, lopping off three zeros from denominations in a bid to simplify finances and boost confidence in a money that has been losing value due to high inflation. The new currency is called bolívar fuerte or "strong bolívar". Officials also say it is part of a broader effort to contain rising prices and strengthen the economy. More...
January 1, 2008
Today at midnight, the Cyprus and the Malta adopted the euro as their official currency; less than four years after their accession to the European Union. The single currency has replaced the Cypriot pound and the Maltese lira at a rate of one euro to 0.585274 Cypriot pound and 0.4293 to the Maltese lira. In both countries the euro was welcomed with outdoor celebrations, including a fireworks display in Malta's capital Valletta. More...