The 1883 Proof Sovereign and 1883 Proof Half Sovereign shown above were struck as Coins of Record at the Sydney Mint. The pair is unique. No other proofs were believed struck in 1883.

To understand the motivations of the Sydney, Melbourne and Perth Mints in producing Coins of Record. And to know the numbers struck, is to recognize the value and outstanding qualities of the 1883 Sydney Proofs.

The Perth Mint's Coins of Record were struck in their inaugural year, 1899. Again in 1901, celebrating Australia's Federation. And finally in 1931, commemorating the striking of Australia's last gold sovereign as the nation moved towards going off the gold standard. 

The Perth Mint was a gold sovereign producer for thirty-three years (1899 - 1931) and produced Coins of Record in only three of them. For collectors, the pool of representative examples is seven. The sale of the 1899 Proof Half Sovereign to the Perth Mint in 2026 now sees that collector pool reduced to six. And only one pair is achievable for a collector, the 1901 Proof Sovereign and Half Sovereign. The Perth Mint Coins of Record are exclusive, highly sought-after and are of high dollar value. 

British collector John G. Murdoch received examples of the 1899 Proof Sovereign and 1901 Proof Sovereign and 1901 Proof Half Sovereign, such was his influence. The 1931 Proof Sovereign was apparently struck as a gift to the Director of Consolidated Goldfields, John Agnew.

The Melbourne Mint was relatively prolific in the production of proof coins, primarily due to the influence of British collector John G. Murdoch. The mint enjoyed a commercial relationship with Murdoch and by 1884, the mint was supplying (selling) him proofs. From 1888 until 1901, the end of the Veiled Head era, Murdoch received Melbourne Mint proofs of each year. And while the mintages remained minuscule, it is the regularity of the issues that is the defining difference between Melbourne Mint Coins of Record and those of the Perth and Sydney Mints. Proof coin production faltered in 1902 at the Melbourne Mint due to Murdoch's passing. 

The Melbourne Mint was a gold coin producer for sixty years (1872 - 1931) and struck Coins of Record in twenty-five of them primarily in the Jubilee and Veiled Head era. For collectors, the pool of representative examples of Melbourne Mint Coins of Record is in the vicinity of forty proof sovereigns and thirty proof half sovereigns. 

The Sydney Mint had no control over its proof strikings for the first sixteen years of its opening. Australia's Coins of Record featuring the Sydney Mint design were struck at the Royal Mint London in 1853, 1855, 1856, 1857, 1866 and 1870. The proximity to already established collector markets in the U.K. and Europe meant that the Sydney Mint proofs were traded commercially soon after they were struck.

The Sydney Mint took control of its proof issues in 1871.

The Sydney Mint produced one St George Proof Sovereign and one Shield Proof Sovereign in 1871. And one of the Proof Half Sovereign, the first year of the Young Head era and (proudly) the very first year that proofs were struck in Australia. No other examples are known. The 1871 Shield Proof Sovereign was offered at auction in 1888 and has never been sighted since, suggesting that it may have been acquired by an institution. The St George Proof Sovereign and Half Sovereign were also first sighted at auction in 1888 and are now held in a long-term holding in Canberra.  

After a two-year hiatus, the Sydney Mint struck proofs in 1880, no doubt for the 1880 Melbourne International Exhibition. Proofs were struck in 1883, the mint's motivation perhaps the receipt of dies from the Royal Mint London for the 1857 sovereign. The Sydney Mint already had the '1883' dies and a decision was most likely made by the mint master to test both the '83 and the '57 dies.  (The similarity in the styles of the two proofs is unmistakable.)  

The Sydney Mint's approach to production of Coins of Record was modest in numbers and sparse in terms of the years in which they were struck, minting Coins of Record in the opening year of each era. And occasionally the closing year. Four years out of seventeen years in the Young Head era (one of which was struck to a specimen finish). Two years in the Jubilee era, one in the Veiled Head. One in Edward VII and five in the George V era, all of which were struck to a specimen finish.  

The name 'Murdoch' is attached to a small number of Sydney Mint proofs. The name 'Dangar' appears more frequently. A New South Wales politician he must have had a strong relationship with the Sydney Mint, holding coins such as the 1887 four-coin set (one of two produced) and 1902 four-coin set (the only known set). These are mightily important coin issues that could only have been acquired by a person of influence. The name Sir William Dixson is also raised in correspondence from Barrie Winsor, in which it was suggested that the Specimen 1920 Sovereign may have been struck at his request, given that his 50th birthday was on 18th April 1920. Perhaps he also requested the strikings in 1922 and 1923. We certainly know he was involved in the closing ceremony at the Sydney Mint in 1926 where he received two specimen 1926 sovereigns that were bequeathed to the State Library of New South Wales.

From 1871 when the Sydney Mint took control over the striking of its proofs until it closed in 1926, the mint struck Coins of Record in only thirteen out of a possible fifty-six years. The 1871 proofs are unique, so too 1883. The 1920 unique, the 1923 unique. Most years are known by one, maybe two examples. A simple maths calculation reveals just how few Sydney proofs are available to collectors.