Malaysia 20 Cents (2011-2014) Nickel Brass Planchet Error

Malaysia (2011-2014) 20 Cents Planchet.W:4.18gm.
What is a Planchet?
A planchet is a prepared disc-shaped metal blank onto which the devices of a coin image are struck or pressed. The metal disc is called a blank until the time it passes through the upsetting machine which causes the rim to be raised. Once it has a rim, the disc is called a planchet .
A planchet is a round metal disk that is ready to be struck as a coin. An older word for planchet is flan.

Preparation of the modern planchet involves several steps. First, the metal (or metals in the case of clad or multilayered coins) is rolled out into a large roll or sheet of the correct thickness. This process is often done by third parties, not by the mint itself. These flat rolls or sheets of metal are then punched out into round blanks that are a little larger than the coin being struck. The blanks are then subjected to an annealing process that softens the metal through heating to approximately 750 degrees Celsius and are then slowly air cooled. They are then washed to remove residue from the annealing process and dried. The blanks then go through an upsetting mill that raises the rim on the edge of the coin, the disc is called a planchet .
Finally, the planchet is struck. After striking, it becomes a coin and is no longer a planchet. Occasionally, a planchet will escape the mint without having been struck. This is a blank planchet error, and is usually worth some premium.. Occasionally, blank planchets can be rare and valuable, such is the case for Malaysia One Ringgit blank planchets, although authentication is highly recommended for such pieces as they would be fairly easy to counterfeit.


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