What is a Planché in Numismatics?

Planché is a term used in numismatics to refer to a blank metal disc or plate that has not been stamped with any design or inscription. These blanks are typically made of copper, nickel, or other metals and are used as the base material for minting coins.

The word "planche" is French in origin and is derived from the Old French word "planchet," which means "flat piece of metal." In numismatics, the term is often used interchangeably with the English word "flan," which also refers to a blank metal disc or plate.

Planches are used in the minting process to create coins by stamping them with dies that bear the desired design and inscriptions. The planche is placed between two dies, and the dies are pressed together to transfer the design onto the planche, creating a coin with the desired features.