Currency (Royal Australian Mint) Determination 2005 (No. 4)

The central concept is “standard composition”. For the precious metal coins in Schedule 1, the standard composition is expressed as a minimum percentage purity: “at least 99.99% gold” or “at least 99.9% silver”. This is a purity threshold, not an exact alloy specification. For the base metal coins in Schedule 2, the composition is an alloy: “copper, aluminium and nickel” for Items 2 and 6 (the TV and Commonwealth Games $1 coins); “copper, zinc, aluminium and tin” for Item 4 (the $5 Duyfken base coin); and “copper and nickel” for Items 8 and 10 (the 50 cent base coins). Two 50 cent coins in Schedule 2 have a standard composition of “at least 99.9% silver, partially plated with 24ct gold” - meaning a base of silver with selective gold plating, not a homogeneous alloy.

Another concept is “standard weight and allowable variation”. Each coin has a target weight and a tolerance. For instance, the $1 silver TV coin (Item 1) has a standard weight of 11.66g with allowable variation of ±0.240g, meaning a legal coin can weigh between 11.42g and 11.90g. The $10 gold coin (Item 5) has a very tight tolerance (5.00g ±0.030g), reflecting the high value of gold and the need for consistency in bullion coins. By contrast, the base metal $1 coins (Items 2 and 6) have a wider tolerance (±0.280g on 9.00g). The $5 base metal coin (Item 4) has the largest absolute tolerance (±0.72g on 20.00g). These tolerances affect the commercial value of the coin as a bullion item - a coin at the lower end of the weight tolerance could lose a small amount of precious metal content compared to a coin at the upper end, though the difference is small relative to market spreads.

The coin “dimensions” are given as maximum diameter and maximum thickness. This is unusual; normally coin specifications give nominal diameter and thickness. The use of “maximum” implies that coins must not exceed those dimensions, but they could be smaller. This gives the Mint some latitude in striking, as long as the coin is not too large or thick to fit into mechanisms or be recognised as that denomination. Shape and edge are also prescribed: circular for most, dodecagonal (12‑sided) for the 50 cent coins; edges are either “14 segments, of which 7 are milled and 7 are plain” (for the $1 coins), “continuously milled” (for the Duyfken $5 and $10), or “plain” (for the 50 cent coins). The obverse design is uniform across all Schedule 2 coins - an effigy of Queen Elizabeth II with the initials IRB (Ian Rank-Broadley) and the inscriptions “ELIZABETH II” and “AUSTRALIA 2006”. The reverse designs are unique to each theme, with detailed textual descriptions of what must appear, including specific inscriptions and optional elements (e.g., the letter “A” on Item 1, and a list of letters “A”, “B”, “C”, “M”, “S”, “H”, “P” and “TV” on Item 2). The reverse designs are not rendered visually; they are described in words, leaving some interpretive freedom to the designer, but all mandatory elements must be present.

The primary entity bound by this determination is the Royal Australian Mint, which is a Commonwealth authority responsible for producing Australia’s coinage. The Mint must ensure that any coin it issues that corresponds to a denomination and design described in Schedule 2 conforms exactly to the stated standard composition, weight, dimensions, shape, edge and design. For coins struck under Schedule 1 (the gold and silver versions of denominations from 1 cent to two dollars), the Mint is required to use the specified precious metal composition. This imposes costs: gold and silver are significantly more expensive than base metals; the Mint must secure supply, fabricate planchets, and manage inventory of precious metals. The determination also affects the Mint’s quality control - the tight weight tolerances, especially for the $10 gold coin, require precise striking and inspection. Any deviation renders the coin non-compliant with the determination, which may affect its status as legal tender or its marketability.

For numismatists, collectors and bullion investors, this determination provides an authoritative reference. They can verify that a coin they purchase from the Mint or on the secondary market matches the official specifications. If a coin deviates from, say, the weight tolerance or composition, it may be a counterfeit or a mint error, affecting its value. The determination also affects precious metal dealers, who must assess Whether these coins are traded as bullion (valued by metal content) or as numismatic items (valued by rarity). The 99.99% gold coins (Schedule 1) are of a purity commonly referred to as “four nines” gold, attractive to investors. The 99.9% silver coins are “fine silver”. The determination creates a legal definition for these coins, which is important for taxation and anti-money laundering compliance - for instance, the ATO may treat them as investment gold or silver under the GST law.

Businesses that accept cash are unlikely to encounter these coins in ordinary circulation, as they are priced at denominations far below their bullion value. A $10 gold coin with 5g of pure gold would have a metal value well above $10; it would be irrational to spend it. However, if presented as legal tender, a merchant might be uncertain whether to accept it. The Currency Act provides that these coins are legal tender, but the determination does not affect that status; it only sets specs. Private enterprise is not directly burdened, but any party involved in importing, exporting, or trading these coins must know the legal specifications to avoid dealing in counterfeit or non-compliant items. The determination also potentially affects counterfeiters: the detailed specs serve as a template, but also as a benchmark for detection.

The determination itself creates no duties or rights for persons other than the Mint. Section 3 imposes a duty on the interpretation of the Currency Act - the Act is to have effect as if the Schedule to the Act is amended. This is a legislative drafting technique; it creates an obligation on courts and administrators to read the Act with the amended composition. But the practical duty falls on the Mint to only issue coins that meet the specifications. Under section 4, the Mint has a duty to ensure that any coin of a denomination described in Schedule 2 conforms to the stated specifications. This is not expressed as a criminal penalty provision; rather, it sets the standard for what constitutes a lawful coin of that type. If the Mint produces a coin that does not match the specifications (e.g., a different edge or design), that coin may not be a coin issued under the Currency Act and may not have the status of legal tender. However, the determination does not explicitly state consequences for non-compliance. The Currency Act itself contains provisions about unlawful coins, and the Mint’s own enabling legislation would govern.

Holders of these coins have a right to use them as legal tender up to the limits set by the Currency Act (e.g., for base metal coins, there may be limits on the amount that must be accepted in payment). The determination does not expand or contract those limits. For precious metal coins, the legal tender status is the same as for base metal coins, but the practical effect is minimal because of the high intrinsic value. The rights of a holder if they receive a non-compliant coin are unclear - they could reject it as not being legal tender, but proving non-compliance would require expert analysis.

The duty on the Mint is operational and internal. There is no private right of action under this determination. A person cannot sue the Mint for issuing a non-compliant coin; the remedy is likely administrative (e.g., the Mint could recall or replace the coins). The design descriptions include optional elements (the letter “A” on Item 1, various letters on Item 2) that give the Mint discretion - a coin without those letters may still comply if the Mint chooses not to include them. This provides some flexibility.

This determination contains no penalty provisions. It is a legislative instrument that specifies physical coin characteristics. Enforcement of compliance rests with the parent Act, the Currency Act 1965, and with the Minister or the Mint’s own governance. The Currency Act includes offences such as making, issuing or possessing counterfeit coins (section 16), and unlawfully melting or defacing coins (section 17). Those offences are separate; the determination provides the benchmark for what constitutes an authentic coin. If a person or entity produces a coin that purports to be of a denomination listed in Schedule 2 but does not meet the specifications (e.g., wrong weight or composition), that coin may be considered counterfeit or not legal tender, and the person could face prosecution under the Currency Act. The maximum penalties for counterfeiting under the Currency Act are imprisonment and fines, but the determination itself does not specify them.

For the Mint itself, failure to comply with the determination is not a criminal offence but could lead to internal administrative consequences: the Parliamentary Secretary or the Treasurer could direct the Mint to cease production, or the Minister could amend or revoke the determination. The coins might also be rejected by the Australian Securities and Investments Commission or the Reserve Bank if they do not meet legal tender standards. Enforcement of the specifications in trade is likely through market mechanisms: collectors and dealers who detect non-compliance will discount the coin or refuse to accept it, and the Mint’s reputation would suffer. If the Mint produces coins that deviate from the allowable variation in weight, they might be melted down or returned. There is no independent regulator designated to audit coins against this determination; the Mint itself is the issuer and is trusted to self-certify compliance. In practice, external auditors or assayers can test coins, and any discrepancy could become a public issue or lead to a recall. The determination does not create a compliance reporting obligation.

The determination is subordinate legislation made under the Currency Act 1965. It amends the Schedule of that Act for composition purposes (section 3), and it specifies detailed coin characteristics under section 13A(1). The Currency Act itself is the primary law governing the currency of Australia, denominations, legal tender limits, and offences. This determination must be read as part of that Act. For example, section 14 of the Currency Act addresses when coins are legal tender; section 15 deals with the force of tender. This determination does not alter those sections. It interacts with other determinations: section 5 states that Schedule 2 does not affect any other determination of coin specifications. So existing specifications for circulation coins (e.g., the 1999 or 2003 determinations) remain in force unless inconsistent. This determination adds new coin types rather than replacing old ones.

There may be interaction with the Competition and Consumer Act 2010 (Australian Consumer Law) if coins are sold as products. The specifications could be part of a representation about the coin’s quality. If a coin is sold as “99.99% gold” but actually is only 99.9%, the seller could face action for false or misleading conduct under the ACL. This determination is not a defence; it sets a minimum, but actual composition must meet or exceed that minimum. Similarly, trade measurement laws (e.g., National Measurement Act 1960) may apply to the weight of precious metal coins sold as bullion; the allowable variation in this determination is a legal tolerance, but the actual weight must be within that range for the coin to be of the stated weight.

For tax purposes, the Australian Taxation Office treats coins of certain purity as investment gold or silver, which may be GST-free under the A New Tax System (Goods and Services Tax) Act 1999. The determination’s classification of 99.99% gold and 99.9% silver coins meets the purity thresholds for GST-free treatment (99.5% for gold, 99.9% for silver). It also may affect income tax on capital gains when coins are sold for more than face value. Anti-money laundering and counter-terrorism financing laws (Anti-Money Laundering and Counter-Terrorism Financing Act 2006) require dealers in bullion to register and report transactions; this determination defines bullion coins that may be covered. The interaction is indirect; the determination does not itself impose AML/CTF obligations, but it provides the legal classification.

The determination also interacts with state and territory laws that regulate the sale of goods or pawnbroking, but no direct conflict is apparent.

The source document provides no amendment history. It is the original text of the Currency (Royal Australian Mint) Determination 2005 (No. 4), dated 12 December 2005. The instrument was likely registered on the Federal Register of Legislation and may have been amended subsequently, but no amendments are recorded in this text. The reader should note that this determination may have been varied or replaced by later determinations (e.g., No. 1, 2, 3, 5 of subsequent years). The source only shows the original determination. Given that it was made in 2005 and the coins are dated 2006, it is a one‑off instrument for a specific commemorative program. Later determinations for other coin programs would supersede or supplement it for later years. However, the determination remains in force for coins produced under it; if any coins from that year remain in inventory or circulation, the specifications still apply. No sunset clause is evident. The determination could be repealed by a later instrument, but the source does not indicate that. The determination number (No. 4) suggests there were at least three earlier determinations in 2005 dealing with other coin specifications. The Parliamentary Secretary’s power to make such determinations is ongoing, so this instrument is one of many in a series. Without amendment history, the safest assumption is that this determination was not amended and is now historical, but its legal effect for the specific coins remains.

The source contains no reference to any litigation concerning this determination. It is a highly technical legislative instrument specifying coin details; it is unlikely to generate court cases. The only plausible litigation would be if a person or entity disputed the legal tender status of a coin (e.g., alleged that a coin fell outside the allowable variation and therefore was not legal tender). However, the allowable variations are quite wide (e.g., ±0.240g on 11.66g), so non-compliance would be rare. Another possible dispute could involve intellectual property rights in the coin designs, but the determination does not address copyright or trade mark - it simply requires the Mint to produce coins with those designs. A designer or artist might claim ownership of the reverse design, but that is a contractual matter between the Mint and the designer, not a matter of this determination. There might be litigation if a collector purchased a coin and later discovered the composition did not meet the 99.9% silver requirement; that would be a contract or consumer law claim, with this determination serving as evidence of the intended specification. No reported cases were found in the source. The determination itself has not been judicially considered. Given its narrow scope, the risk of future litigation is low. The Administrative Appeals Tribunal or the Federal Court might review the determination if a person challenged its validity under the Legislation Act 2003, but no such challenge is recorded.

Several aspects of this determination could trip up unwary readers or practitioners. First, the legal status of the Schedule 1 coins: the determination says the Currency Act is to have effect as if a reference to standard composition were replaced with gold or silver. This means coins of 1 cent, 2 cents, 5 cents, 10 cents, 20 cents, 50 cents, $1 and $2 can now be made of pure gold or silver. However, the Currency Act still specifies the standard weight and dimensions for those denominations in its own Schedule (unless separately amended). This determination does not alter weight, dimensions or design for those denominations. So a gold 1 cent coin would have the same weight and dimensions as a standard 1 cent coin (2.60g, diameter 17.53mm, etc.), but made of 99.99% gold. The market value of such a coin would be many times its face value. The determination does not require these coins to have any special design; they could look like ordinary 1 cent coins but in gold. That creates a risk: an unwitting person might receive a gold 1 cent coin as change and not realise its value. Conversely, a counterfeiter could produce base metal coins that look like gold coins and pass them off. The determination does not mandate any distinguishing design for precious metal versions.

Second, the allowable variations: the $10 gold coin has a tolerance of ±0.030g on 5.00g, which is ±0.6%. That is tight for manufacturing, and a coin that is 4.97g (just under) could be outside spec. If the Mint produces a coin that is 4.96g, it is non-compliant and may not be a legal coin. A collector might reject it. The silver coins have wider relative tolerances. For the $1 silver coin, ±0.240g on 11.66g is ±2.1%, so a coin at 11.42g is still compliant despite a 2.1% weight reduction. That could affect bullion value if many coins are at the low end.

Third, the optional letters on the reverse designs: Item 2 (base metal $1 TV coin) says the reverse “may also include” one or more of the letters A, B, C, M, S, H, P and TV. This means the Mint can choose to include only some or none. A collector expecting all letters to appear might be confused if some coins lack them. The determination does not guarantee uniformity.

Fourth, the 50 cent silver coins are “partially plated with 24ct gold”. The gold plating may wear off over time, revealing the silver underneath. The determination does not specify thickness of plating, only that it is “24ct gold”. This could lead to complaints of deterioration. The silver base is still legal tender because the standard composition is “at least 99.9% silver, partially plated with 24ct gold” - the plating does not change the base composition requirement.

Fifth, the determination does not specify in which finish (proof, uncirculated, bullion) these coins must be struck. The design descriptions do not mention finish. Therefore, the Mint could issue them in any finish as long as the physical specs are met. A buyer expecting a “proof” coin might be disappointed if the Mint issues a “brilliant uncirculated” version.

Sixth, the $1 Commonwealth Games coin (Item 6) has a reverse design that includes “a group of abstract lines and patterns (symbolising the water, land and the hills surrounding Melbourne)”. That is subjective; two different designers could produce different abstract patterns, and both could comply. The Mint has design freedom within that description.

Finally, the determination does not specify the number of coins to be issued or any mintage limits. That is left to the Mint’s discretion. Collectors interested in rarity have no guarantee from this instrument.

Compliance with this determination is largely the responsibility of the Royal Australian Mint. For any coin it produces that falls within the denominations and descriptions of Schedules 1 and 2, the Mint must ensure that:

• The coin’s composition meets the stated purity or alloy. For Schedule 1 coins (gold and silver versions of standard denominations), the Mint must use at least 99.99% gold or at least 99.9% silver. For Schedule 2 coins, the composition is stated for each item (e.g., “copper, aluminium and nickel” for Item 2; “at least 99.9% silver, partially plated with 24ct gold” for Items 7 and 9). The Mint must source these materials and verify purity via assay or certification. For the base metal alloys, the exact proportions are not given; the Mint can choose the recipe as long as the metals listed are present. For the silver plated coins, the plating must be 24ct gold, but the thickness and method are not specified; the Mint should ensure the plating is “partial” as described (i.e., only certain areas plated, as shown in the design description: the centre circle is gold plated in Item 7, the outer ring in Item 9).

• Weight must be within the allowable variation. The Mint must calibrate striking presses and weigh coins, either 100% or via sampling. Coins falling outside the range must be culled. For high-value gold and silver coins, the Mint should use tighter internal controls to avoid producing coins at the extreme ends of the tolerance, which could affect market confidence. The weight must be the “standard weight” as defined; the determination gives a single target weight, so the Mint should aim for that nominal.

• Dimensions: maximum diameter and thickness must not be exceeded. The Mint should design dies and set press parameters to ensure coins are no larger or thicker than the stated maxima. Coins that are slightly smaller or thinner are permissible, but being too large is prohibited. This is an unusual spec; normally a nominal diameter is given and coins can be slightly under. The Mint should design with a safety margin to avoid exceeding the maximum.

• Shape and edge must be exactly as described. Circular coins must be circular; dodecagonal coins must have 12 sides. Edge types must match: 14 segments with alternating milled/plain for $1 coins; continuously milled for $5 and $10; plain for 50 cent. Die production must replicate these edge patterns accurately.

• Obverse and reverse designs must include all mandatory elements. For the obverse, the effigy of Queen Elizabeth II with initials IRB and inscriptions “ELIZABETH II” and “AUSTRALIA 2006” must appear. For the reverse, all listed representations and inscriptions must be present. The optional letters or symbols (e.g., “A” on Item 1) may be omitted, but if included, must be as described. The Mint should have design approval from the Minister or relevant authority.

For third parties (dealers, collectors, banks) there is no direct compliance burden. They are not required to verify spec. However, if they trade in these coins, they should be aware of the specifications to avoid misrepresenting the product. For example, a dealer advertising a coin as “99.99% gold” should ensure it is listed in Schedule 1. The determination can be used as a reference to confirm authenticity. If a party receives a coin that appears to deviate, they may refer to the determination to reject it as legal tender.

The determination does not prescribe record-keeping or reporting. The Mint should retain mint records, assay certificates, and quality control data as evidence of compliance, though not required by this instrument. For auditing purposes, the Mint’s internal processes should be sufficient.