Mints use hubs bearing raised images similar to what appear on a coin to imprint an indented image of the coin onto a steel rod that becomes the die which strikes the blank disks which in turn become coins.
Mints use hubs bearing raised images similar to what appear on a coin to imprint an indented image of the coin onto a steel rod. This steel rod becomes the die. This die strikes the blank disks. These blank disks in turn become coins.