From the Curatorial Desk · Authentication
Krugerrand security & international minting.
The world's first modern gold bullion coin — and how to know you've got the real one.
Edge serrations, alloy composition, inscriptions, weight, and the international mintmarks that mark a handful of exceptional Krugerrand issues from outside the South African Mint. A working authentication and minting reference for collectors and dealers.
Edited byBen Ungerer & Johan Ungerer · The Jardines Curatorial Desk
Manufacturing & minting
Two Institutions · One CoinThe production of Krugerrands is a unique partnership between two South African institutions. Gold blanks are supplied by Rand Refinery Ltd., the world's largest single-site gold refining and smelting complex, owned by leading South African gold mining companies5. The actual striking of the coins is performed by the South African Mint in Pretoria5. The South African Reserve Bank has authorised Rand Refinery as the sole entity to sell Krugerrands from source to primary distributors worldwide5.
Core security features
Four Authentication PillarsEdge serrations (reeding)
The most reliable way to distinguish proof from bullion Krugerrands is by counting the edge serrations. This feature was implemented specifically to differentiate collector editions from investment-grade coins2.
Alloy composition
Krugerrands are struck in a specific copper-gold alloy — 91.67% gold, 8.33% copper126. This alloy gives the coin a characteristic reddish tinge and makes it more durable than pure gold coins15. The copper content helps resist scratching and denting — an important feature as softer 24-carat coins require protective packaging5.
Inscriptions & design
Authentic Krugerrands have specific inscriptions on both sides. The obverse features the profile of Paul Kruger with "SUID-AFRIKA · SOUTH AFRICA" in the legend29. The reverse features a pronking springbok antelope with the mint date in the field, and the legend inscribed with "KRUGERRAND" and the gold weight29. The name "South Africa" and the gold content are inscribed in both Afrikaans and English2.
Weight & dimensions
Krugerrands are minted to precise specifications that can be verified. The 1 oz coin has a mass of 33.93 g, diameter of 32.77 mm, and thickness of 2.84 mm2. Any significant deviation from these standards should raise suspicion7.
Edge serrations in detail
The Key Distinguishing FeatureThe number of edge serrations (also called reeds) is one of the most reliable ways to distinguish between bullion and proof Krugerrands. This feature was deliberately designed to differentiate collector editions from investment-grade coins2.
Investment, mass market2
Higher-quality finish, collector editions2
Proof Krugerrands are priced above bullion value and are intended as collectors' items, although non-proof Krugerrands also carry a small premium above gold bullion value2.
Authentication for collectors
Four MethodsVisual inspection
Physical tests
Advanced testing
Professional appraisal
For the most accurate assessment, have your Krugerrand tested by a certified professional or a recognised grading service such as NGC or PCGS7.
International minting & mintmarks
Berlin 2006 & 2010While Krugerrands are exclusively struck in South Africa — by the South African Mint, from blanks supplied by Rand Refinery5 — a small number of special limited editions have been produced with international mintmarks to commemorate significant numismatic events. The Berlin issues of 2006 and 2010 are the most important examples.
Berlin Otto Schultz mintmark
In 2006, a special 1 oz gold Krugerrand was issued with the "Berlin Otto Schultz" mintmark, honouring the original engraver of the Paul Kruger portrait8. Otto Schultz was a die cutter at the Berlin Mint who prepared the wax model of the effigy of Kruger used on all Boer coins from 1892 – 18976.
Berlin Bear mintmark
In 2010, a 1 oz gold Krugerrand was issued with the "Berlin Bear" mintmark in honour of the World Money Fair in Berlin8. This special issue recognised the historic connection between the Krugerrand and the Berlin Mint where Otto Schultz worked.
An extremely limited numbered set
85 Sets · Total MintageThese two coins were combined into an extremely limited "Double Strike Set" in 2010, with a mintage of only 85 sets. The set includes:
- 2006 Krugerrand 1 oz gold coin with the "Berlin Otto Schultz" mintmark.
- 2010 Krugerrand 1 oz gold coin with the "Berlin Bear" mintmark.
- Two sterling silver medallions.
- Numbered certificate from the SA Mint and a wooden box8.
Privy marks & special issues
From Anniversary to Oom PaulSeveral special edition Krugerrands have been issued with distinctive privy marks. These marks serve as additional authentication features and turn each release into a separately catalogued collector issue.
- 50th Anniversary (2017). Commemorative issues feature a '50' privy mark — above the springbok design for platinum and silver issues, and to the right of the springbok for gold issues2.
- 50th Anniversary varieties. "Premium Uncirculated" versions in gold (.916), platinum (.999) and silver (.999) with issue limits of 2,017 platinum, 5,000 gold, and 1,000,000 silver2. An additional 15,000 silver "Proof" Krugerrands were also issued2.
- 2024 Oom Paul Press privy mark. Features a privy mark depicting the iconic Oom Paul press, together with the date 1892 — the year the first coins were struck on that machine4.
2024 Oom Paul Press Krugerrands
Final Strikes · 132-Year PressThe historic Oom Paul press, which struck the first Krugerrands in 1967, was used for the last time in 2024. Special edition 1 oz and ¼ oz Krugerrands were struck on this press featuring a privy mark depicting the iconic press itself, together with the date 1892 — the year the first coins were struck on this machine4.
The obverse of these coins features President Paul Kruger modelled by die-engraver Otto Schultz, struck from the original die used in 1892 for the historic Kruger half-crown coin4.
Legal tender & export
SARBA 1989 · SARS LimitsLegal tender in South Africa
Although gold Krugerrand coins have no face value, they are considered legal tender in South Africa by the South African Reserve Bank Act (SARBA) of 19892. As legal tender coins, they do not need to be assayed or melted down upon re-sale, unlike many other gold cast and minted bars5.
Export limits
The SARB restricts the export of Krugerrands by a South African resident to a non-resident to a maximum of R30,000 (about US$2,100 or €1,870 as of June 2018). Visitors to South Africa can export up to 15 coins by declaring the items to the South African Revenue Service2.
Specifications summary
At a Glance| Specification | Detail |
|---|---|
| First minted | 3 July 196726 |
| Composition | 91.67% gold, 8.33% copper (22 carat)125 |
| Minting authority | South African Mint (striking) · Rand Refinery (blanks & marketing)256 |
| Legal tender status | Yes (South Africa) — SARBA 19892 |
| Bullion edge serrations | 1602 |
| Proof edge serrations | 2202 |
| International mintmarks | 2006 (Berlin Otto Schultz), 2010 (Berlin Bear)8 |
| 1 oz dimensions | 33.93 g · 32.77 mm diameter · 2.84 mm thick2 |
Sources
Nine Primary & SecondaryBessergold. Gold coin 1/10 oz KRUGERRAND.
Wikipedia. Krugerrand.
Helmut Fischer. SIGMASCOPE® GOLD B and GOLD C — phase-sensitive eddy current testing reference.
The South African Mint Company. 2024 Oom Paul Krugerrands — official release documentation.
FNB Namibia. Important Features of the Krugerrand Coins.
ModernCoinMart. The 2018 Silver Krugerrand.
Gold Berg International. How to Test Gold Krugerrands with Confidence — LinkedIn article.
MA-Shops. S. Africa Krugerrand 2006 and 2010 Double Strike Mintmark Berlin Bear 2 oz Proof Gold — product listing & provenance.
BTCC. Inscriptions verification reference (Chinese-language counterfeit detection guide).
Revision history
Living DocumentKeep exploring
Related ReadingThe Krugerrand series
The full 1967 – present Krugerrand reference — gold, silver, proof, and bullion across the entire programme.
Mint HistoryThe Oom Paul Press
The 132-year-old press that struck the first Krugerrand in 1967 and the final pedigreed strikes in 2024.
Mint HistoryThe Berlin Mint connection
Where Otto Schultz worked, and the historical link the 2006 and 2010 mintmark issues commemorate.