Jardines Galleries · Numismatic Cold Case
The Menné Half Pond Mystery.
South Africa's greatest numismatic cold case. The only known 1892 single-shaft half pond — a coin of immense rarity, last seen at a Sotheby's sale in Johannesburg on 20 April 1977, sold and resold within minutes, photographed, then vanished within days. A 2021 investigation found no trace.
The coin itself
1892 · Single-shaft variety · KM#9.2The Menné Half Pond is the only known example of an 1892-dated ZAR half pond bearing the corrected single-shaft ox-wagon design (KM#9.2). All other recorded single-shaft half ponds are dated 1893 to 1897. There is no other 1892-dated piece of this type in any cabinet, anywhere.
Crucially, the coin shows considerable wear. It circulated among the public before being collected — a fact that carries the weight of the entire authenticity argument. Modern fakes don't carry the abrasion patterns of decades in pockets and tills, and the wear is one of the principal reasons every expert who examined the piece concluded it was genuine.
The disappearance
20 April 1977 · Sotheby Parke Bernet, JohannesburgSold to John Keogh of Keogh Coins (Durban) at the Sotheby Parke Bernet Johannesburg sale. Within minutes, Douglas Liddell of Spink & Son (London) offered Keogh a R2,000 profit. Keogh accepted; the coin changed hands the same day. Photographs were taken. Liddell flew to London with the coin.
Approximately a week later, Liddell telephoned Keogh and said "John, I lost the coin." No specific details were ever given. Keogh assumed the loss had occurred during the flight. The coin has not been seen in public since.
Provenance timeline
From struck die to vanished cabinetA reconstructed life of the coin — from its uncertain origin in the 1890s through its 1935 appearance in the Menné collection, the fifteen minutes between sale and resale at Sotheby Parke Bernet in April 1977, and the four-month gap during which Keogh Coins listed it for sale on a printed price-list after it was already lost. The pivot point is marked in ice; everything before is gold.
The coin is created
Origin debated. One serious hypothesis — supported by die evidence and the absence of other 1892 single-shaft pieces — is that the coin was a once-off rectified specimen manufactured in Germany and sent to Pretoria for approval after the 1892 double-shaft "disselboom" debacle. Whatever its origin, the wear pattern shows it entered circulation soon after striking.
Already in private hands
The coin is part of a private collection by 1905 — though a memo dated 9 January 1905 listing the collection's contents does not include the 1892 half pond, suggesting it was added shortly afterwards. The wear suggests circulation during the period leading up to the post-WWI gold premium, when many gold coins were melted by speculators.
W.J. Menné inherits the collection
Menné inherits a coin collection from his father — among them, the 1892 half pond. He keeps the coin for safekeeping for a further 21 years, seemingly unaware of its uniqueness. The coin survives the war, the post-war gold market, and four decades of South African political upheaval, untouched.
The Sotheby sale
The coin is offered at Sotheby Parke Bernet, Johannesburg, in a sale catalogued as "Catalogue of South African and other coins including the Menné 1892 single shaft, half pond." John Keogh of Keogh Coins (Durban) is the successful bidder. Douglas Liddell of Spink & Son (London) is also in the room, and immediately offers Keogh a R2,000 profit. Keogh accepts. The coin changes hands the same day. Photographs are taken. Liddell flies to London, carrying it.
"John, I lost the coin"
Approximately a week after the auction, Liddell telephones Keogh from London and tells him the coin is gone. No details are given. Keogh assumes it was lost during the flight. The coin has not been seen in public since.
The promotional listing
Four months after the loss, Keogh Coins publishes a fixed price-list with the Menné Half Pond on the front page, priced at R36,000. In a 2021 interview, Keogh explains: it was "just for promotion purposes." The coin was already lost — but the photographs existed, and the decision was made to list it anyway.
The Nortje investigation
Pierre H. Nortje, secretary of the Western Cape Numismatic Society, conducts a detailed investigation. He contacts Spink directly to ask whether they ever lodged an insurance claim on a high-value SA gold coin lost in transit in 1977 or 1978; Spink does not respond. He later reaches John Keogh by phone in Bloemfontein. The auction-day events are confirmed in detail. The fate of the coin is not.
John, I lost the coin.
The authenticity question
Three experts · One die · One rebuttalBecause the 1892 single-shaft half pond is unique, every dealer who has ever wanted to dismiss the coin has cited the absence of other examples as proof of forgery. The documentary record runs the other way: the coin was authenticated by three credible experts, the relevant die was preserved at the Berlin Mint, and the coin's circulation wear is a forgery's hardest physical detail to fake.
Dr. Hugo Hammerich
Deputy Mint Director, Berlin · 1905In Die Deutschen Reichsmünzen (1905), Hammerich confirmed that the 1892 half pond die was included in a list of master dies "for all subsequent minting in Pretoria" and was preserved at the Berlin Mint. The die existed; the strike that produced the Menné coin had institutional precedent.
Elias Levine
Author of the foundational ZAR study (1974)Levine — author of the standard reference on ZAR coinage and counterfeits — stated that "on the balance of probabilities the coin would seem to be real," based on the documentary evidence. His one caveat: he had not personally examined the piece. Documentary endorsement, with the right epistemic humility.
J.P. Roux
Former South African Mint MasterRoux is the only one of the three to have examined the coin in person. His verdict: genuine. As former Mint Master, his familiarity with both ZAR-era striking technique and the look-and-feel of authentic period gold gives his direct examination particular weight.
A once-off specimen from Berlin?
It has been credibly suggested that the Menné Half Pond was a once-off rectified specimen coin — manufactured in Germany and sent to Pretoria for approval by the Berlin Mint after the "disselboom" double-shaft debacle of 1892. This would explain why the coin is unique, why it was struck on dies that otherwise saw no 1892 production, and why the rest of the single-shaft series is dated 1893 onwards.
The original dies for the coin have never been found — in either South Africa or Germany. The most likely explanation is that they were lost when the Berlin Mint sustained damage during the Second World War. Without the dies, the only evidence the coin ever existed is the coin itself — and that, since April 1977, has been lost too.
The 2021 investigation
Pierre H. Nortje · WCNSIn 2021, Pierre H. Nortje — secretary of the Western Cape Numismatic Society and author of the forthcoming The Rarest of the Rare — opened the first serious modern inquiry into the fate of the coin. The inquiry produced two findings, one institutional and one personal. Together they ruled out a generation of rumour without recovering the coin.
Inquiries to Spink
Nortje contacted Nik von Uexkull at Spink in London, asking whether the company had ever lodged a large insurance claim for an expensive South African gold coin lost in transit in 1977 or 1978. Despite follow-ups, Spink declined to provide any information. The institutional record stops where the company's response would have started.
Interview with John Keogh
Nortje received a phone call from John Keogh himself — recently discharged from hospital, willing to help. Now living in Bloemfontein and still active in numismatics after stints in Texas and the Netherlands, Keogh confirmed the auction-day sequence in detail: the bid, the immediate Liddell offer, the R2,000 profit, the photographs, the flight, the phone call. The story is now corroborated by its principal living witness.
Rumours ruled out
Long-circulating rumours that the coin had been lost in the post, or stolen and tossed overboard during a sea voyage between Australia and England after a coin show, were investigated and found to have no supporting evidence. As Nortje concludes: "It appears the coin was never lost in the post or tossed overboard somewhere on the open seas. It just got lost. Is it possible that the 1892 Single Shaft Menne half pond has once again been placed in a vault for safekeeping, waiting patiently to reveal its true pedigree? Only time will tell."
- Western Cape Numismatic Society — The Mystery of the 1892 ZAR Single-Shaft Half Pond, Part 3, Pierre H. Nortje, 14 August 2023.
- Bibliothèque nationale de France — Catalogue of South African and other coins including the Menné 1892 single shaft, half pond, Sotheby Parke Bernet, 1977.
- Nortje, P.H. — The Rarest of the Rare: Unique and Very Rare Gold Coins of the Zuid-Afrikaansche Republiek (forthcoming).
- Personal correspondence — P.H. Nortje ↔ John Keogh, September 2021.
- Hammerich, Hugo — Die Deutschen Reichsmünzen, Berlin Mint, 1905.
- Levine, Elias — The Coinage and Counterfeits of the Zuid-Afrikaansche Republiek, 1974.