75th Anniversary Commemorative Coin Challenge


If you think you have cracked the layers of cryptographic code on our ASD commemorative coin, please fill out the fields below and let us know your answers!

We will contact you via email and reveal the hidden messages embedded within the coin at the end of September 2022.

Please note, any data collected by this website is subject to the Intelligence Services Act 2001 and privacy rules issued by the minister responsible for Defence pursuant to the Act. Any information you provide will only be used for the purpose for which you have provided it and will not be disclosed without your consent.

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Acknowledgement of Country icon

Acknowledgement of Country

We acknowledge the Traditional Owners and Custodians of Country throughout Australia and their continuing connections to land, sea and communities. We pay our respects to them, their cultures and their Elders; past, present and emerging. We also recognise Australia's First Peoples' enduring contribution to Australia's national security.

Authorised by the Australian Government, Canberra