Only 3 million them... https://www.perthnow.com.au/news/au...-of-35th-birthday-celebrations-ng-b881010227z
Digging up an old thread here because I've found a couple of these recently. It there any demand from collectors for this coin or at 3,000,000 is the mintage too high to be collectable?
I think I've come up with a formula to calculate the value of these coins. Mintage × (face value ÷ mintage)