What does blank planchet mean?

A blank planchet refers to a metal disc that has been cut to the proper size for coin production but has not yet been struck with any design or markings. These planchets are the raw material used in minting coins and can be made from various metals, including copper, nickel, and silver. Blank planchets can sometimes be found in the numismatic community, especially if they are accidentally released into circulation, making them collectible items.