The Union proof sets

South Africa’s proof sets are where the Union’s coinage was, quite literally, first struck. Before a single coin entered circulation, the new Pretoria Mint produced a small number of proof sets in 1923 to mark the arrival of a national coinage. For collectors they remain the most disciplined way to hold the Union: one cased set per year, every denomination, in the finest finish the Mint could strike.

The 1923 set — first coinage of the Union

The 1923 proof set is the foundation stone. It was the first coinage issued by the Union of South Africa, struck at the Royal Mint’s new Pretoria branch and cased by the London silversmiths Mappin & Webb. The standard set — half-crown down to farthing, in silver and bronze — was issued to a mintage of just 655 sets, which is why an intact, original-cased example is genuinely difficult to find today. A fuller “long” version added the two gold proofs, the sovereign and half-sovereign (catalogued as KM-PS2), and is rarer still; intact gold long sets seldom come to market.

Short set, long set

The terms confuse newcomers, so it is worth being exact. A short set holds the minor denominations — half-crown (2/6) through to the farthing (¼d). A long set adds the largest coin to complete the year. The catch is that “the largest coin” changed: in 1923 the long set added the gold sovereign and half-sovereign, because there was no crown yet; from 1947, once the five-shilling springbok crown existed, the long set is the short set plus that crown. Same word, two different additions, depending on the era — and the long set is always the scarcer and more valuable of the pair.

What is in a set

The composition followed the circulating coinage exactly, including the silver downgrade of 1951: every silver denomination was .800 fine from 1923 to 1950, then .500 fine from 1951 to 1960. The penny, halfpenny and farthing were bronze throughout. A complete long set of the crown era looks like this:

The annual run to 1960

After 1923 the Mint issued proof sets year by year through the Union period, the obverse following the monarch — George V, then George VI from the late 1930s, then Elizabeth II from 1953 — until the Union gave way to the Republic in 1961. The mintages are small throughout, but they are not even: certain years are far harder than the catalogue order suggests, and the proofs of 1931 are the legendary rarities of the whole Union, with some denominations struck only in proof and in tiny numbers. Those key dates are worth their own treatment.

Into the Republic

The tradition did not stop at 1960. When South Africa decimalised in 1961 the proof sets continued in the new rand coinage, and Steynberg’s springbok — carried over from the five-shilling crown — reappeared on the gold R1 and R2 that replaced the Union’s gold pound and half-pound. The Union proof sets are therefore both an ending and a hinge: the last proof coinage of South Africa as a dominion, and the design bridge into the Republic that followed.