154Prussia. Frederick William IV, 1840–1861.
Gold medal in the weight of 50 ducats
commemorating the publication of the second volume
of Alexander von Humboldt’s *Kosmos*.
NGC MS 65 PL.
From the estate of Emperor William I.
Estimate: 40.000 Euro

166Prussia. Frederick William IV, 1840–1861.
Gold medal in the weight of 50 ducats commemorating
the unveiling of the equestrian statue of
Frederick the Great on Unter den Linden in Berlin in 1851.
NGC MS 63 PL.
From the estate of Emperor William I.
Estimate: 25.000 Euro

191Prussia. William I, 1861–1888.
General’s Medal in the weight of 120 ducats, 1871,
commemorating the victory over France.
A magnificent specimen.
From the estate of Emperor William I.
Estimate: 75.000 Euro

297Russia. Nicholas I, 1825–1855. Family ruble.
1 1/2 rubles (10 zlotys), 1835, St. Petersburg.
NGC MS 64 (Top Pop).
Only 36 examples struck.
A cabinet piece from polished dies.
From the estate of King Frederick William IV.
Estimate: 250.000 Euro

1098Holland. Province.
5 ducats, 1681.
Struck with the dies of a guilder.
NGC PF 64 Cameo.
Proof.
Estimate: 40.000 Euro

1192HRE. Ferdinand II, 1592–1618–1637.
5 ducats, 1634, Vienna.
Extremely rare.
Extremely fine-uncirculated.
Estimate: 10.000 Euro

1266HRE. Vienna.
Salvator Medal in the weight of 12 ducats,
n. d.(around 1840).
NGC PF 61 CAMEO.
Proof.
Estimate: 15.000 Euro

1334City of Regensburg.
5 ducats, n. d. (1708–1710),
with the title of Joseph I. NGC MS 64.
Extremely rare. According to mint records,
only 7 copies struck.
A magnificent piece.
Estimate: 25.000 Euro

1602German New Guinea.
10 New Guinea Marks, 1895 A.
NGC MS 65.
A magnificent piece.
Estimate: 50.000 Euro

2757Saxony.
John Frederick the Magnanimous and
Maurice, 1541–1547.
Trinity Medal, 1544.
A masterpiece of German medal art. Magnificent,
excellent craftsmanship.
Estimate: 75.000 Euro

Archive: People and Markets

Further Investigations into the Stolen Celtic Coin Hoard

Following police success in the case of the stolen Celtic gold hoard, the authorities have made additional details public. It appears that the perpetrators were professionals, but their professionalism was their undoing.

A Celebration of Spanish Numismatics

On 28 and 29 June 2024, the first Evento Numismático Internacional was held in Madrid. Dealers and collectors had high expectations – and the event exceeded them. The atmosphere in Madrid was one of exceptional excitement.

A-Mark Precious Metals Acquires Stack’s Bowers Galleries

One of the largest auctioneers in the numismatic world has a new owner. Stack’s Bowers Galleries, including its parent company, entered into a definitive merger agreement to be acquired by A-Mark Precious Metals.

Peter K. Tompa.

Peter K. Tompa Appointed as New IAPN Executive Director

The International Association of Professional Numismatists (IAPN) has a new Executive Director: Peter K. Tompa succeeds Jean-Luc Van der Schueren.

Archive: Coins, Medals and more

The courtyard of the Alcazár of Seville was immortalised on a 2024 2-euro coin from Spain. Photo: Real Casa de la Moneda (coin), javarman3 / Getty Images Pro via Canva Pro

The Secret of the Success of State Quarters, UNESCO Coins and Federal State Series

25 years ago, the United States of America started a new chapter in numismatic history. Their State Quarters became the model for many other successful coin programs – including Spain’s UNESCO World Heritage Site series.
Bei genauer Betrachtung können Münzen besondere Merkmale aufweisen, die sich entweder gut oder schlecht auf ihren Wert auswirken. Diese zu erkennen und mit den richtigen Begriffen benennen zu können ist wichtig für jeden Münzsammler. 
Achtung, Bronzepest kann ihre Sammlung zerstören! Foto: Shutterstock.

Cleaning, Patina, Verdigris etc.: Which Errors Affect the Price of a Coin? – Part 2

The price of a coin does not only depend on its rarity and quality. In the second part of our overview we will talk about wear and tear, cleaning and the consequences of environmental processes.
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