A coin is a small, flat, (usually) round piece of metal or plastic used primarily as a medium of exchange or legal tender. They are standardized in weight A gold coin is a coin that is made mostly or entirely of gold. Most gold coins minted since 1800 are either 90% gold or 22 karat (11/12 gold), but some The guinea was a coin of approximately one quarter ounce of gold that was minted in Great Britain between 1663 and 1814. The name came from the Guinea There are eight euro coin denominations, ranging from one cent to two euros (the euro is divided into a hundred cents). The coins first came into use in The Suit of Coins is one of the four suits used in Latin suited playing cards, such as Spanish, Italian and tarot decks. It corresponds to the Suit of Coin flipping, coin tossing, or heads or tails is the practice of throwing a coin in the air and checking which side is showing when it lands, in order Coins of the United States dollar were first minted in 1792. New coins have been produced annually since then and they make up a valuable aspect of the The 2 euro coin (€2) is the highest value euro coin and has been used since the introduction of the euro (in its cash form) in 2002. The coin is used in The dollar coin is a United States coin worth one United States dollar. It is the second largest U.S. coin currently minted for circulation in terms of Mother coins (simplified Chinese: 母钱; traditional Chinese: 母錢; pinyin: mǔ qián) or seed coins were coins used during the early stages of the casting process A challenge coin may be a small coin or medallion, bearing an organization’s insignia or emblem and carried by the organization’s members. Traditionally The standard circulating coinage of the United Kingdom is denominated in pounds sterling (symbol "£"), and, since the introduction of the two-pound coin The 1-euro coin (€1) is a euro coin with a value of one euro (€1). It is made of two alloys: the inner part of cupronickel, the outer part of nickel brass In minting, coining or coinage is the process of manufacturing coins using a kind of stamping which is now generically known in metalworking as "coining" Irish coins have been issued by a variety of local and national authorities, the ancient provincial Kings and High Kings of Ireland, the Kingdom of Ireland Coin collecting is the collecting of coins or other forms of minted legal tender. Coins of interest to collectors often include those that circulated for The British one pound (£1) coin is a denomination of the pound sterling. Its obverse bears the Latin engraving ELIZABETH II D G REG “Dei Gratia Regina” Canadian coinage is the coinage of Canada, produced by the Royal Canadian Mint and denominated in Canadian dollars ($) and the subunit of dollars, cents Silver coins are possibly the oldest mass-produced form of coinage. Silver has been used as a coinage metal since the times of the Greeks; their silver The eagle was a United States $10 gold coin issued by the United States Mint from 1792 to 1933. The eagle was the largest of the five main decimal base-units The Australian two dollar coin is the highest-denomination coin of the Australian dollar. It was first issued on 20 June 1988, having been in planning The British decimal twenty pence (20p) coin – often pronounced "twenty pee" – is a unit of currency equal to 20/100 of a pound sterling. Like the 50p coin The British farthing (​1⁄4d) coin, from "fourthing", was a unit of currency of one quarter of a penny, or ​1⁄960 of a pound sterling. It was minted in Since the 1976 Summer Olympics in Montreal, the Royal Canadian Mint has struck Summer and Winter Olympic coins to mark Games held in Canada. Most numismatists €2 commemorative coins are special euro coins minted and issued by member states of the eurozone since 2004 as legal tender in all eurozone member states