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 is the first triangular commemorative coin issued by the Royal Australian Mint. It commemorates the 25th anniversary of the opening of Parliament House in Canberra.
The building was designed by Mitchell/Giurgola & Thorp Architects and built by a Concrete Constructions and John Holland joint venture. It was opened on 9 May 1988 by Elizabeth II, Queen of Australia. Parliament House contains 4,700 rooms, and many areas are open to the public. The principal design of the structure is based on the shape of two boomerangs and is topped by an 81-metre flagpole. The New Parliament House building was warmly received for its beauty and democratic symbolism, particularly the grass-covered roof that allows visitor access.
The coins were released in Proof FDC grade, boxed in a presentation case, with a numbered Certificate of Authenticity. No coins of this type were released into circulation. | 
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