The five dollar denomination of the Australian dollar (written as $5) is served by a banknote for normal daily transactions.
From time to time, the Royal Australian Mint also issues $5 coins for collectors (Non-Circulating Legal Tender, or NCLT). Some special coins, such as this one, are made with a triangular shape.
This triangular commemorative coin is the second issue in the Royal Australian Mint's ANZAC Centenary Coin Program.
The Australian and New Zealand Army Corps (ANZAC) was a First World War army corps of the Mediterranean Expeditionary Force. It was formed in Egypt in December 1914, and operated during the Gallipoli campaign. General William Birdwood commanded the corps, which primarily consisted of troops from the First Australian Imperial Force and 1st New Zealand Expeditionary Force, although there were also British and Indian units attached at times throughout the campaign. The corps disbanded in 1916, following the Allied evacuation of the Gallipoli peninsula and the formation of I ANZAC Corps and II ANZAC Corps.
Anzac Day (25th April) is a national day of remembrance in Australia and New Zealand that broadly commemorates all Australians and New Zealanders "who served and died in all wars, conflicts, and peacekeeping operations" and "the contribution and suffering of all those who have served".
The coins were released in Proof FDC grade, in special gift packaging. No coins of this type were released into circulation.