In the coining process the blank is struck with two dies simultaneously, one for the obverse coin face and the other for the reverse coin face.
The coining operator individually selects each blank, and feeds it into the coining press, which contains multi-stroke 200 – 260ton knuckle presses, and a serrated collar which restricts the sideways flow of the material.
The blank is then struck between three and five times, depending on the diameter and detail of the coin being minted. After the coin is struck, the operator removes it and inspects it under a magnifying glass before and placing it on a special storage tray.
Some coins are also encapsulated at this stage. The dies are then cleaned with a special soft cloth to remove any residue from the die faces first before the next blank can be struck. The coins are now ready to be packed according to specific packaging requirements.
Did you know: Circulation coins are struck once under normal pressure and a high rate of speed, as they need to be produced in large quantities in accordance to the demands of a country. Collectable coins in contrast, are usually struck at least twice, under high pressure in order to bring out all of the details in the design as they draw their charm from the immaculate representation of the design, as well as the limited quantities they comes in.