The mobile coin press travels right around Australia for events from coin shows to agricultural shows. Operated by the Royal Australian Mint it doesn't strike an entire coin it simply adds a type of mintmark known as a counterstamp to the reverse of the coin. Up until now it has always struck this mark onto a 1 dollar coin.

For the occasion of the World Stamp Expo in Melbourne this week the mobile or portable coin press is being used to strike an M counterstamp. This counterstamp (or specialised mintmark) is being struck onto the commemorative 100 Years of Commonwealth Stamps 50 cent coin for inclusion in a PNC. This is the first time it's been used on a fifty cent coin.

Extremely rare. Comes in coin pouch.