Jardines Galleries · 1986 – 1990s · Johannesburg
Gold Reef City Mint.
A working mint inside a theme park, where visitors watched coins being struck and walked out with souvenirs that turned out to be real Krugerrands. The Gold Reef City Mint operated from 1986 through the 1990s on the second of the two original 1891 Loewe presses — the sister to the famous Oom Paul at the SA Mint — and produced a small, tightly-marked range of bullion and collectables under its own "GRC" mintmark.
The tourist mint
Gold Reef City · JohannesburgGold Reef City was a theme park built around an abandoned gold mine on the Witwatersrand reef south of Johannesburg, opened in the 1980s as part of an elaborate historical recreation of the gold-rush era. The working mint was installed as a functioning historical exhibit: visitors could stand at a viewing rail, watch the press strike, and buy the coins that came out the other side.
The arrangement was unusual. Most demonstration mints (like the SA Mint's later Coin World) struck only commemoratives or museum tokens. Gold Reef City struck legitimate Krugerrands — bullion-grade gold coins, with a unique mintmark, sold over the counter to whoever happened to walk through the gates that day.
The sister press
Refurbished 1986 · Original 1891 LoewePresident Kruger ordered two presses from Ludwig Loewe & Co. in Berlin in 1891. The famous one — the original Oom Paul — has its own page in this library. The second press, less celebrated and rarely documented in the standard sources, was refurbished in 1986 and installed at Gold Reef City.
That a Berlin-built 1891 industrial press could be returned to active service nearly a century later, on a Johannesburg theme-park floor, says something about both the quality of the Loewe build and the specific gravity of "Oom Paul" as a brand. The press's current whereabouts after the operation closed are not publicly recorded. For the famous Oom Paul I, see The Oom Paul Press.
The theme park mint
Gold-rush recreation · Working exhibitGold Reef City opened in the early 1980s as a casino-museum complex on the Crown Mines property south of Johannesburg, built around an authentic abandoned gold mine. The conceit was a recreated 1880s gold-rush town — Victorian-era buildings, period shopfronts, costumed staff, and a working mine tour that took visitors underground in original equipment.
The mint was installed as part of the historical recreation, drawing on the very same Berlin-built equipment that had served the original ZAR-era and Royal Mint operations. Refurbished in 1986 and operated from approximately that year through the 1990s, it gave Gold Reef City a working numismatic asset — and gave South African collectors a small, curious sub-series of coins distinguished from standard SA Mint output by a single mintmark: GRC.
The GRC output
Four coin categories · Single mintmarkThe mint's output divides into four categories. The most collectible are the gold Krugerrands and Proteas, both with the GRC mintmark in the design that distinguishes them from standard SA Mint issues; the R2 collectables are the most accessible; the medals and tokens fall outside currency status entirely.
GRC Krugerrands
Full Krugerrand denomination range — 1 oz, ½ oz, ¼ oz, 1/10 oz. Identical specifications to standard SA Mint Krugerrands except for the "GRC" mintmark integrated into the design. These are the most collectible items in the GRC output and the most actively traded today.
Gold Proteas
The Protea series — South Africa's secondary gold bullion line, named for the national flower — was struck at Gold Reef City with the same GRC mintmark. Same alloy and weight tolerances as standard Proteas, with the mintmark as the only collector-grade differentiator.
R2 collectables
A range of R2 collectable coins in various designs, several commemorating local mining history and the Witwatersrand gold story. The most accessible price point in the GRC catalogue, and the easiest entry for collectors building a GRC sub-set.
Medals & tokens
Non-currency strikes — commemorative medals and tokens sold as theme-park souvenirs. Outside legal-tender status but produced on the same equipment with the same finish standards. Often confused with circulating issues by inexperienced collectors; the absence of a denomination is the easiest tell.
The second Oom Paul
Berlin 1891 · Refurbished 1986 · Whereabouts unrecordedThe press at the heart of Gold Reef City's mint was a twin of the famous Oom Paul — both manufactured by Ludwig Loewe & Co. in Berlin in 1891 on Kruger's order, both shipped to Pretoria together, both used at the original ZAR Mint from 1893. The two presses ran in parallel through the ZAR era and beyond, but only the first acquired the affectionate name and the long single-press identity. The second was always known by reference to the first: the "second" Oom Paul, the "other" press.
Refurbished in 1986 for the Gold Reef City installation, the press struck under the GRC mintmark for roughly a decade. When the operation wound down in the 1990s, the press did not return to public display in any documented setting, and its current whereabouts are not publicly recorded in the standard SA Mint or numismatic literature. It is one of the small open questions of South African mint heritage.
Collecting GRC
A scarce sub-seriesSold to tourists
Most GRC coins were sold over the counter to theme-park visitors and have ended up in collections worldwide. The geographically diffuse population, combined with the relatively short operational window, means the supply is genuinely scarce and slow to consolidate at major auctions.
20 – 50% over standard bullion
GRC-marked Krugerrands typically command a 20–50% premium over standard SA Mint Krugerrands of the same year and condition. The premium reflects the mintmark's collector status rather than any difference in metal content.
R2 collectables: $50 – $200
The R2 collectable range trades in roughly the $50–200 band depending on design, condition, and the specific commemorative content. The mining-history designs are in higher demand than generic issues.
Verify the mintmark
Standard authentication: confirm the GRC mintmark, weight, and metal specifications. Counterfeit GRC pieces are not common (the market is small enough to deter sophisticated forgery), but altered standard Krugerrands with falsely-applied "GRC" marks have been seen.
- South African Mint — corporate communications, Home to Oom Paul.
- Randburg Coin — historical references on Gold Reef City Mint output.
- For the original Oom Paul press, see this library's Oom Paul Press; for the broader Berlin context, see the Berlin Mint Connection.