Estimate: 1.300 EURThrace,
Byzantion.
Stater (250–1st century BC).
Condition: ef+
69
Estimate: 1.800 EURRoman Empire,
Matidia.
Denarius (112 AD), Rome.
Condition: very rare, vf /vf+.
222
Estimate: 11.000 EURRoman Empire,
Julian II. Apostata as Caesar.
Solidus (355–357 AD), Rome.
Condition: unc
581
Estimate: 6.000 EURDenmark,
Frederik IV.
Double-Ducat 1704, Copenhagen.
With certificate of authenticity.
Condition: ef-
681
Estimate: 1.000 EURIreland,
George III.
6 Shilling Token 1804.
Condition: PL
805
Estimate: 1.000 EURNetherlands,
Friesland.
Adler-Taler 1598.
Condition: Very rare, vf
886
Estimate: 2.000 EURSinzendorf,
Johann Wilhelm.
Ducat 1753, Nuremberg.
Condition: rare, lightly worked, vf-
1165
Estimate: 2.000 EURPomerania-Stettin,
Bogislaus XIV.
Taler 1629.
Condition: very rare, very fine details, vf+.
1385
Estimate: 1.200 EURReuss,
younger line,
Heinrich XIV.
2 Mark 1884 A.
Condition: unc-
2059
Estimate: 12.500 EURDependencies, Danzig.
25 Gulden 1923.
Condition: PCGS PR62
2681

Archive: People and Markets

Gold Coins With Altered Years: Also a Known Problem in Switzerland

In one of our last issues, we published an article by NGC about a Prussian gold coin with an altered year. Switzerland is also very familiar with such forgeries, as Patrick Huber tells us.

New Publication on Hallmarks of Gold Coinage in Serbia and Yugoslavia

After the work of countless renowned scholars, is it even possible to make new findings in the numismatics of Austria-Hungary and the Balkans? The Austrian Research Society for Numismatics says „yes!“ and proves this with Aleksandar Brzić’s new book on Serbian and Yugoslav hallmarks on gold coins from 1882 to 1941.

John Highfill († 15 June 2025)

Tulsa, Oklahoma rare coin dealer John Highfill, founder of the National Silver Dollar Roundtable and author of a landmark 1,200-page reference book, The Comprehensive U.S. Silver Dollar Encyclopedia, passed away on June 15, 2025. He was 82.

Between Tradition and the Demands of a New Economic World

The 32nd Mint Directors Conference took place in Cape Town from April 27th to 29th, 2025. It was the highlight of my numismatic journey through South Africa. In an international context, South Africa presented itself as a promising country of (numismatic) opportunities.

Archive: Coins, Medals and more

The Turks, the Bohemian Estates and Two Gnadenpfennigs by Ferdinand I

SINCONA’s spring auction will be held from 13 to 15 May 2024. Among other highlights, two extremely rare gold gnadenpfennigs by Ferdinand I are on offer. The multiple coins with a weight of 10 and 15 gold gulden are among the great treasures of Habsburg numismatics. We share their story.

Queen Anne: Great Britain on Its Way to Becoming a Global Power

On 26 May 2025, SINCONA will auction off part 6 of the British Collection presenting the medals of this ensemble. In this article, we will show you some of the treasures among the lots and explore the story of Queen Anne. Under her rule, Great Britain became the most important trading power in Europe.
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