{"product_id":"2013-echidna-5c-gold-proof-coin","title":"2013 Echidna 5c Gold Proof Coin - 99.99% Pure Gold","description":"\u003cp\u003eThe 2013 Five Cent Gold Proof Coin is a rare reissue of one of Australia's most recognisable decimal designs - Stuart Devlin's echidna - struck in 99.99% pure gold by the Royal Australian Mint. Where the circulating 5c piece is cupro-nickel, this proof edition transforms the familiar echidna into a collector's piece of genuine precious-metal value, with a mintage limited to just 500 coins worldwide.\u003c\/p\u003e\n\u003cp\u003eThe coin's obverse carries the Ian Rank-Broadley effigy of Queen Elizabeth II, Australia's legal tender portrait used across the nation's decimal currency since 1966. Each coin is accompanied by a numbered Certificate of Authenticity, confirming its place within the strictly limited mintage, and is presented in official Royal Australian Mint packaging.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/5907\/9788\/files\/30.webp?v=1785456032\" alt=\"Guaranteed authenticity, fair pricing and fast delivery – 2013 Echidna 5c Gold Proof Coin | Koalaehub\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003eAt 6.03g and 19.41mm diameter, this is a genuinely small but dense piece of gold - ideal for collectors building a set of Australian proof gold issues or anyone seeking a compact, high-purity bullion collectible with strong provenance.\u003c\/p\u003e\n\u003ch2\u003e2013 Echidna 5c Gold Proof Coin Specifications:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDenomination: 5c\u003c\/li\u003e\n\u003cli\u003eMetal: Gold (99.99%)\u003c\/li\u003e\n\u003cli\u003eMass: 6.03g\u003c\/li\u003e\n\u003cli\u003eDiameter: 19.41mm\u003c\/li\u003e\n\u003cli\u003eFinish: Proof\u003c\/li\u003e\n\u003cli\u003eMintage: 500\u003c\/li\u003e\n\u003cli\u003eDesigner: Stuart Devlin\u003c\/li\u003e\n\u003cli\u003eMint: Royal Australian Mint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eHow is this 2013 Echidna 5c gold proof coin verified as genuine?\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eEach coin ships with its individually numbered Royal Australian Mint Certificate of Authenticity confirming its place in the 500-coin mintage, and Koalaehub independently checks weight (6.03g) and diameter (19.41mm) against RAM specifications before listing.\u003c\/p\u003e\n\u003ch3\u003eIs the 2013 Echidna 5c Gold Proof Coin one of the rarest Australian 5c coins?\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eYes,  with a mintage of just 500 and struck in 99.99% pure gold rather than standard cupro-nickel, it's among the rarest 5c coins ever issued by the Royal Australian Mint.\u003c\/p\u003e\n\u003cp\u003eLooking to grow your gold proof collection? Browse more rare Australian mint issues in our \u003ca href=\"https:\/\/koalaehub.com\/collections\/collectibles\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003eWorld \u0026amp; Vintage Coins, Gold Proof Sets \u0026amp; Commemorative Medals \u003c\/span\u003e\u003c\/a\u003ecollection.\u003c\/p\u003e","brand":"Koalaehub","offers":[{"title":"Default Title","offer_id":54145223197036,"sku":null,"price":2490.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/5907\/9788\/files\/GoldProofCoin-2.webp?v=1786060260","url":"https:\/\/koalaehub.com\/products\/2013-echidna-5c-gold-proof-coin","provider":"Koalaehub","version":"1.0","type":"link"}