Definition: 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 auntil 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.
The phases of a coins beginnings!
When referring to, and coins which were made from cast metal discs rather than machined metal discs, the generally preferred term is .
There are really no hard and fast rules about the usage of these terms in ancient coin collecting, and you will sometimes hear ancient coin blanks referred to as “planchets”, even though they were made from cast metal. In modern machine-made coinage, the distinction is very clear: the disk is a stamped metal “blank” before, and a “planchet” afterwards. A coin that is ready to be stamped is a “Blank” or a “Slug” – From from