People and markets
Early Islamic Copper Coins
In 2025, Nikolaus Schindel published a sylloge of early Islamic copper coins following the reform of 77 AH. A book that has been very well received by specialists! It demonstrates what numismatics can be at its best.
read more at our partner SIXBID
The Coins of Gaza in Roman Times
Yoav Farhi has published the sixth volume of the *Corpus Nummorum Palaestinensium* by the Israel Numismatic Society. It is dedicated to the Roman coinage of Gaza and serves as a new standard reference work that is a must-have for anyone wishing to expertly identify coins from this city.
read more at our partner SIXBID
Come to think of it
What Is the Value of a Coin?
Ursula Kampmann presents a few extreme examples—all of which were auctioned in June 2026—and analyzes the values.
read more at our partner SIXBID
Coin Show Etiquette: How Dealers Should Conduct Themselves Toward Collectors
Don’t think that only collectors behave badly. Many of you, dear readers, have written to me about what dealers could improve in their conduct. Together, we’ll establish rules for what constitutes good behavior for a dealer at a coin show.
read more at our partner SIXBID
What Is the Value of a Coin?
Ursula Kampmann presents a few extreme examples—all of which were auctioned in June 2026—and analyzes the values.
read more at our partner SIXBID
Coin Show Etiquette: How Dealers Should Conduct Themselves Toward Collectors
Don’t think that only collectors behave badly. Many of you, dear readers, have written to me about what dealers could improve in their conduct. Together, we’ll establish rules for what constitutes good behavior for a dealer at a coin show.
read more at our partner SIXBID
Coins, Medals and more

Short-Whiskered Dragon: The dragon with the short whiskers
Heritage has valued a proof coin from the Chinese mint in Tianjin, dated 1911, at US$2 million. The proof coin is extremely rare; only three examples are known to be in private hands. More important, however, is its historical significance, as the coin symbolises the changing times in China.read more at our partner SIXBID

The Imperial Collection
On 23 June 2026, the first part of the Hohenzollern coin collection will go under the hammer. The Osnabrück-based auction house Künker will be auctioning coins and medals from the collections of the Kings of Prussia and the Emperor of Germany. We present a selection of particularly special items and explain what the coins in the collection reveal about the character of Emperor Wilhelm I.read more at our partner SIXBID
Archive
The Gnadenpfennig – An Object Between Decoration, Medal, and Coin
Gnadenpfennigs are an extremely rare category of numismatic objects. Künker is proud to offer nine lots in auction 418 on 29 January 2025 that are, or are likely to be, gnadenpfennigs. We explain the purpose of these issues and when they were created.
400 Years Ago – The Founding of Kongsberg
On 2 May 1624, Christian IV of Denmark and Norway founded the mining town of Kongsberg. A series of coins to be offered in the upcoming Künker sale tells us of the hopes that the ruler placed in the silver from these mines.
Marcus Antonius: The Loser Who Did Not Write History
Künker’s auction 419 features numismatic rarities from the Roman civil war that followed Caesar’s death. In addition to the Eid Mar denarius, aurei of Marcus Antonius will cross the auction block. We will re-tell his story – from his point of view, not that of Augustus.
Gustav III: A Conservative Revolutionary
On 20 June 2023, Künker will auction off medals that the Swedish King Gustav III himself gave as a present to the young Peter Frederick Augustus of Oldenburg. These medals are a testament to the policies of the king who was shot dead at a masked ball in 1792.
On the road
The Mercado de Monedas y Sellos on Plaza Mayor
Madrid is unique worldwide: nowhere else has hosted a coin and stamp market every Sunday for nearly a century. At around 100 stalls, collectors of all ages browse coins from ancient times to the euro.
read more at our partner SIXBID
French Reparations, the Imperial War Treasury, and the July Uprising
After the Franco-Prussian War (1870–71), France paid Germany 5 billion francs—but what became of it, and how did it shape German power? A visit to Spandau Fortress.
read more at our partner SIXBID
The Mercado de Monedas y Sellos on Plaza Mayor
Madrid is unique worldwide: nowhere else has hosted a coin and stamp market every Sunday for nearly a century. At around 100 stalls, collectors of all ages browse coins from ancient times to the euro.
read more at our partner SIXBID
Who is who
Fun
Franklin’s World:
Good to know
Selling coins and the age-old question: How do I get the most for my coins?
Consigning items for auction requires choosing the right auction house—one that gives the collection proper attention and reaches the right buyers. Commission is often a secondary consideration.
read more at our partner SIXBID
What is provenance?
Provenance: This term plays a decisive role in the coin trade today. Provenances are worth their weight in gold. The same antique coin with a proper provenance can cost several times more than it would without provenance. So what is provenance?
read more at our partner SIXBID
The Mercado de Monedas y Sellos on Plaza Mayor
Madrid is unique worldwide: nowhere else has hosted a coin and stamp market every Sunday for nearly a century. At around 100 stalls, collectors of all ages browse coins from ancient times to the euro.
read more at our partner SIXBID





































Early Islamic Copper Coins
In 2025, Nikolaus Schindel published a sylloge of early Islamic copper coins following the reform of 77 AH. A book that has been very well received by specialists! It demonstrates what numismatics can be at its best.
read more at our partner SIXBID
The Coins of Gaza in Roman Times
Yoav Farhi has published the sixth volume of the *Corpus Nummorum Palaestinensium* by the Israel Numismatic Society. It is dedicated to the Roman coinage of Gaza and serves as a new standard reference work that is a must-have for anyone wishing to expertly identify coins from this city.
read more at our partner SIXBID