2004 50c Coin Value Guide. 2004 Australian 50c: Mintage, Prices & The IRB Die‑.Deterioration Error”

The 2004 Australian 50-cent coin is a fascinating piece of modern Australian numismatic history. While at first glance it appears to be a common circulating coin, collectors know that certain varieties—especially those affected by IRB die-deterioration errors—can carry noticeable premiums in today’s coin market Understanding its mintage, design details, and error varieties is essential for anyone looking to trade, collect, or evaluate this coin accurately
The standard 2004 Australian 50c coin features the iconic Commonwealth Coat of Arms on the reverse, designed by Stuart Devlin. It displays the kangaroo and emu supporting the shield, with the denomination “50 CENTS” below. The obverse shows the fourth portrait of Queen Elizabeth II, designed by Ian Rank-Broadley (IRB). This portrait is especially important, as it is directly linked to the well-known IRB die-deterioration error seen on some coins from this era

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In terms of mintage, the Royal Australian Mint produced approximately 27 million circulation strikes of the 2004 50c coin. Because of this relatively high mintage, most examples found in circulation are worth face value only, especially in worn or damaged condition. However, condition plays a major role. Coins in uncirculated or mint-state condition can sell for AUD $2 to $6, while coins graded MS65 or higher by professional grading services may fetch AUD $10 to $25 or more, depending on demand
The real collector interest lies in the IRB die-deterioration error. This error occurs when the coin die becomes worn from excessive use, causing design elements—especially on the Queen’s portrait—to appear distorted, swollen, or blurry. On affected 2004 50c coins, collectors often notice rough or expanded lettering, loss of fine detail in the Queen’s hair, and uneven surfaces around the rim. Because these errors were not intentional and vary in severity, each example is slightly different
Coins showing clear and dramatic IRB die-deterioration are far scarcer than standard issues. Depending on visibility and overall condition, these error coins can sell for AUD $20 to $150, with exceptional examples sometimes reaching higher prices in specialist auctions. Importantly, the error must be genuine—normal wear, damage, or post-mint alteration does not qualify.
When trading or selling a 2004 Australian 50c coin, always examine it under good lighting or magnification. Look closely at the Queen’s portrait, lettering, and rim. If you believe you have an IRB die-deterioration error, consider professional authentication or grading, as this can significantly increase buyer confidence and market value
In conclusion, while most 2004 Australian 50c coins remain common, selected high-grade examples and genuine IRB die-deterioration errors hold real collector value. This makes the coin an excellent example of how modern circulating currency can still offer exciting opportunities for collectors and traders alike.

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