1 Dollar - Elizabeth II 4th Portrait - The Great Aussie Coin Hunt - Letter X

The Great Aussie Coin Hunt was a circulation release program by the Royal Australian Mint designed to drive public engagement through a full alphabet of themed dollar coins — 26 letters, each assigned an object meant to represent something distinctly Australian. "X" presented an obvious problem: almost nothing quintessentially Australian starts with it. The Mint assigned it to the X-ray, a nod to Australian medical innovation that reads more as a solution to a typographical puzzle than a genuine cultural statement. It is, predictably, among the harder letters to find in completed sets, partly because collectors pulled them early and partly because the public found the novelty amusing enough to hoard.