What is a Coin?
A coin is a piece of metal or occasionally other material (such as leather) certified by some marks or stamps upon it to have a certain intrinsic value or exchange worth. It is distinguished from paper money, such as a US Dollar or Japanese yen, which has no intrinsic value except for its face value, which is backed by a promise of government backing. In modern times, most coins are made of a base metal, and their value derives not from their precious metal content but rather from the fact that they have been declared to have a fixed exchange value by law.
The history of coinage is a long and complex story, with many different types of metals used in circulating coins over time. The most common type of ancient circulating coin, the drachma, was introduced in 610 BC, and was one of the first truly universally accepted currencies of the world. It dominated the Mediterranean and later the Byzantine Empire until replaced in the fourth century AD by the gold dinar of Philip II of Macedon.
Early coins often were privately minted by individuals and served as badges or tokens, rather than as official currency. Examples include the Lydian coinage with its inscriptions of Phanes’ light and the Corinth coinage with its obverse type of pegasus. These early minted coins were often hoarded, and the study of coin finds can reveal important economic, political or social information. The popularity of a particular coin can also indicate a city or state’s wealth and power. For example, the popularity of Athenian silver in the Levant or Corinth’s silver in Magna Graecia indicates that these cities and states had established trade links.
In later ages, the coinage of a specific king or emperor was often used to illustrate a national identity. A popular coin from the reign of Alexander the Great showed his image with a palm branch and wreath.
When a coin is no longer in circulation, it is typically melted down and used for other purposes. Coins can usually be identified in hoards and private collections by their size, type, metal, design and inscription. They may also bear a mint mark, privy mark or other design feature.
The most valuable coins are often those in excellent condition, with a rare or historically significant design and beautiful patina. Collectors often consider the condition of a coin, its historical significance, rarity, beauty and size to determine how much it is worth. The value of bullion coins, on the other hand, is largely based on their metal content.