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Republic silver Proof Pattern "Rifle Corps" 10 Zlotych 1934 PR65 Ultra Cameo NGC.

Coins of Poland and Danzig in Heritage Spotlight Auction July 15

The Spotlight: Poland and Danzig World Coins Auction from Heritage celebrates the long and storied numismatic history of these regions. This is a World...
The extraordinary Felipe V 8 Escudos gold coin. Image: Jesus Vico.

Sedwick Wins Finest 1715 Mexican Royal 8 Escudos in Nail-Biter

On June 27, the U.S. numismatic firm Sedwick & Associates, LLC (formerly Daniel Frank Sedwick, LLC) had the honor of representing the winning bid...
1992 China 2000 Yuan Seismograph Commemorative Gold Coin. Image: Heritatge Auctions / CoinWeek.

Chinese Coins Celebrating Invention Lead Heritage $8.4 Million HKINF World Coin Auction

Two gold Chinese coins celebrating notable scientific inventions sold for $816,000 each to lead the Heritage HKINF World & Ancient Coins Platinum Session and...
1853 2 Fredericks D'Or. Image: Heritage Auctions / CoinWeek.

Scandinavian Coins in July 1 Heritage Auction

The inaugural Scandinavian Showcase Auction from Heritage Auctions, scheduled for July 1, features a selection of numismatic treasures spanning centuries. Highlights include a delectable...
1496 Denmark Noble Gold Coin. Image: Stack's Bowers / CoinWeek.

NGC Grading World-Renowned L.E. Bruun Collection Offered by Stack’s Bowers

Numismatic Guaranty Company (NGC) has been selected to authenticate and grade the collection of Lars Emil Bruun, which represents the most impressive group of...
1759 Friedrich August I Taler. Image: NGC / CoinWeek.

Coins of the German States Highlight Heritage Auction June 23

Heritage's June 23 German States Showcase Auction proves a richly curated event highlighting the vast numismatic history of the many German States that issued...
1992 China 2000 Yuan Seismograph Commemorative Gold Coin. Image: Heritatge Auctions / CoinWeek.

Chinese Coins Celebrating Seismograph and Compass Shake Up Heritage Hong Kong World Coins Auction

A gold Chinese coin celebrating one of the most significant inventions in the study of natural history could send shockwaves through Heritage's Hong Kong...
Stack's Bowers October 2024 Islamic Coin Auction.

Stack’s Bowers to Hold Islamic Coin Collectors Choice Online Auction

Stack’s Bowers Galleries announces a special auction in September 2024 focused on Islamic and Central Asian coinage. Anchored by a large selection of historical...
1891 Netherlands 25 Cents. Image: Heritage Auctions / CoinWeek.

1891 Netherlands 25 Cents Brings Record $1.13 Million at Heritage

Kwartje becomes most expensive Dutch coin ever sold   An 1891 Netherlands 25 Cents or kwartje sold for €1.045.000 (about $1,130,376) at Heritage Auctions Europe-Cooperatief (an...
Selections from the Bruun Collection. Image: Stack's Bowers / CoinWeek.

Stack’s Bowers Announces Pt. I of L. E. Bruun Collection of Scandinavian Coinage

The world’s most valuable collection of international coins ever to be sold featuring nearly 300 coins worth more than US$10,000,000   Stack’s Bowers Galleries announces auction...
Petition Crown. Image: Numismatica Ars Classica

‘Petition Crown’ of Charles II Sells for World Record $1 Million

A ‘Petition Crown’ of Charles II has been sold for CHF 949,375 (about $1 million) to become the most expensive British silver coin ever...
Highlights from Heritage Auctions 2024 Central States Numismatic Society Auction.

Heritage Central States Auctions Top $52 Million

U.S. Coins An 1863 Ten Dollar, Judd-349 PR64 Cameo, PCGS. CAC earned a record $810,000 to lead the Heritage Auctions Central States Numismatic Society (CSNS)...
Stack's Bowers and Ponterio Spring 2024 Hong Kong Auction. Image: Stack's Bowers / CoinWeek.

Stack’s Bowers Realizes $22 Million+ in April 2024 Hong Kong Auction

Stack’s Bowers and Ponterio continued their market-leading Hong Kong sales with another successful spring auction held in April 2024. The firm presented 9,558 lots...
Stack's Bowers and Ponterio Spring 2024 Hong Kong Auction. Image: Stack's Bowers / CoinWeek.

Rare Chinese Coins in Stack’s Bowers Spring 2024 Hong Kong Auction

Stack’s Bowers and Ponterio is pleased to announce the Spring 2024 Hong Kong Auction of nearly 9,600 lots of coins, medals, tokens, and currency....
Auctioneer looks out for shill bidding. Image: Adobe Stock.

Shill Bidding – A Way Some Consignors Inflate the Sale Price of Their Own...

By Charles Morgan and Hubert Walker for CoinWeek Notes ..... (n.) Shill bidding is a practice in which a seller, consignor, or associated party places bids...

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