 | This article needs additional citations for verification. (January 2023) |
Australia | |
| Value | 0.50 AUD |
|---|---|
| Mass | 15.55 g |
| Diameter | 31.65 (across flats[1]) mm |
| Thickness | 2.80 mm (maximum)[2] |
| Edge | Plain |
| Shape | Dodecagonal |
| Composition | 75% copper, 25% nickel |
| Years of minting | 1969–present |
| Catalog number | — |
| Obverse | |
 | |
| Design | Queen Elizabeth II (1969–2023) King Charles III (2024–present) |
| Designer | Various (1969–2023) Dan Thorne (2024–present)[3] |
| Design date | 2024 |
| Reverse | |
 | |
| Design | Australian coat of arms |
| Designer | Stuart Devlin |
| Design date | 1965 |
The twelve-sided Australian fifty-cent coin is the third-highest denomination coin of the Australian dollar and the largest in terms of size in circulation. It is equal in size and shape to the Cook Island $5 coin, and both remain the only 12-sided coins in the southern hemisphere. It was introduced in 1969[4] to replace the round fifty-cent coin issued in 1966.
The original, round, 50-cent coin was made of 80% silver and 20% copper; but as the value of a free-floating silver price became higher, the coin's bullion value became more valuable than its face value; so that version was withdrawn from circulation and replaced with the dodecagonal cupro-nickel version.
It is by diameter the largest Australian coin currently issued and second largest after the Crown of 1937–38. It is also the heaviest Australian coin in common circulation. Many commemorative designs have been issued, the large size allowing for detailed content.
With a diameter of 31.65 millimetres (1.246 in) across flats,[1] the 50-cent coin is one of the largest in volume among those currently circulating in the world. One coin of larger diameter is the Costa Rican five-hundred-colón (32.9 millimetres (1.30 in)); the larger [5] fifty-franc (CFP) (32.9 millimetres (1.30 in)) discontinued in January 2023 by the smaller F 50 (24.0 millimetres (0.94 in)).
The 1986, 1987, 1989, 1990, 1992, year dated 50¢ are only available in mint and proof sets, with the exception of the 1967 and 1968, as no mint/proof sets exist for those years and there were no circulation strikes produced either.
Fifty-cent coins are legal tender for amounts not exceeding $5 for any payment of a debt.[6]
- ^ a b Fifty Cents, Royal Australian Mint. Retrieved 28 January 2023.
- ^ "Currency (Royal Australian Mint) Determination 2005 (No. 4)".
- ^ "Heads or Tails". Australian Government Royal Australian Mint. Retrieved 30 June 2024.
- ^ "Australian Coin Collecting Blog - The Complete Guide to Australian 50 Cent Coins". 4 November 2010. Retrieved 28 January 2023.
- ^ "A compter du 1er septembre 2021, de nouvelles pièces en Franc Pacifique". Institut d’Émission d’Outre-Mer (IEOM). 22 September 2022. Retrieved 17 November 2023.
- ^ "RBA Banknotes: Legal Tender". banknotes.rba.gov.au. Retrieved 28 January 2023.