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A piedfort or piedforte (misspelled as piefort in the Standard Catalog of World Coins) is a coin measuring twice the original's weight and thickness. The name is derived from a French word meaning "heavy foot". Coins like this are normally not put into general circulation, and are usually only struck for presentation purposes by individuals of mints for collectors.
Piedfort originated in Europe, and was most prevalent from the 16th century to the 17th century. Russia struck its first piedfort coinage during the reign of Peter the Great. In 1890, the Paris Mint issued piedfort. The Royal Mint of the United Kingdom is known for creating commemorative piedfort coins, especially since 1982. The Hungary Mint Ltd. made commemorative piedfort coins for the 1980 Winter Olympics at Lake Placid.
- Piedfort on the English Wikipedia
- Vastagveret on the Hungarian (Magyar) Wikipedia
- Pjedfortas on the Lithuanian (Lietuvių) Wikipedia