Elongated coin
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An elongated coin is a coin that has been flattened or stretched, and embossed with a new design. Such coins are often used as commemorative or souvenir tokens, and it is common to find coin elongation machines in tourism hubs, such as museums, amusement parks, and natural or man-made landmarks.
An elongated coin
A 'penny press' at the Royal Armouries Museum in Leeds. This produces elongated coins from one new penny piece.
The first elongated coins were made by a die and metal rollers.
Using a common crank style penny squishing/elongation machine.
Exonumia
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Exonumia are numismatic items other than coins and paper money. This includes "Good For" tokens, badges, counterstamped coins, elongated coins, encased coins, souvenir medallions, tags, wooden nickels and other similar items. It is an aspect of numismatics and many coin collectors are also exonumists.
Assorted exonumia, including a poker chip and an elongated coin
A Smokey Bear Geocoin
Obverse of a communion token from South Leith Parish Church
A Great Western Railway pay cheque