Crafted with a composition of 75% copper and 25% nickel, this 2004 Australian 50 cent coin features the Coat of Arms of Australia with the image of Queen Elizabeth II. Struck in business style at the Canberra Mint, this coin is part of the Elizabeth II 50 Cents Type 4 series, which encompasses designs from 1999 to 2019. It's considered a scarce coin with a mintage of 17,900,000, and it's a staple for collectors of Australian decimal currency.The coin measures 31.65 mm in diameter and weighs 15.55 g, with a plain edge that adds to its traditional look. As a circulation coinage piece, it's a tangible slice of Australian history from the early 2000s era, representing the Commonwealth of Australia under the reign of Queen Elizabeth II. This particular coin is a noteworthy find for anyone passionate about collecting Australian numismatic treasures.