Errors & Varieties

By Mike Byers for Mint Error News ......   This unique Proof 1971-S Eisenhower Dollar overstruck on a San Francisco Assay Office medal is featured in...

Over the past few months, Heritage Auctions has offered parts 1 through 5 of the Don Bonser Collection of Error Coins. Now, we're pleased...

By Doug Winter - RareGoldCoins.com ......   CoinWeek Content Partner   As part of the Auraria Collection of Dahlonega gold coinage, I recently had the pleasure of selling...

By Bullion Shark LLC ......   When it comes to error coins, a mule is simply a coin that was struck from a die pair that...

Stack’s Bowers Galleries is thrilled to announce another unprecedented selection of bitcoins and physical cryptocurrency in their Summer 2022 Global Showcase Auction. This offering comes...

Professional Coin Grading Service (PCGS) certified two extremely rare and unusual Washington Quarter errors in 2017. The first is the third-known example of a two-tailed...

Stack’s Bowers Galleries is thrilled to present the finest of three known Proof 1825/4/1 Capped Head Left half eagles in their Summer 2022 Global...

Bidding is now live on GreatCollections.com for a potentially once-in-a-lifetime opportunity to win a unique US Mint error coin. This 1906 Indian Head cent,...

By Steven Cochran for Gainesville Coins ......   The 1888 Morgan silver dollar is best known for its interesting die varieties. For collectors of rare varieties...

For three decades, Sydney F. Martin of Doylestown, Pennsylvania and Amelia Island, Florida, was a preeminent figure in American numismatics. He served as president...

By Louis Golino, special to CoinWeek .....   As a collectible, Morgan silver dollars, minted between 1878 and 1921, have no real peer in American numismatics....

By Christopher Maisano - Numismatist, Stack's Bower Galleries ......   The August Global Showcase Auction from Stack's Bowers Galleries will feature a Standing Liberty quarter error,...

GreatCollections is offering discerning collectors the opportunity to bid on an 1835 Matron Head large cent graded MS65 RB by PCGS. Certified by CAC...

July 14-17 to mark first auction appearance for AU50 rarity   An extremely rare 1943 Lincoln cent that was struck on a bronze planchet, which has...

By Mike Byers ......   A unique gold Buffalo Nickel has been sold by Mike Byers Inc for $400,000 USD to the JDG Trust, owner of...

Mint errors take center stage again in Heritage Auctions' latest Error Coinage Showcase Auction. Bidding is open now, with the concluding Live Session scheduled...

By Bullion Shark LLC ......   Recently, two important and unique United States Mint error coins – a very rare off-center Carson City Morgan silver dollar...

Certified by Professional Coin Grading Service, this banknote has mismatched serial numbers and is also missing some serial number digits   Bidding has reached $5,500 for...

Bidding is now live on GreatCollections.com for a stunning 1821 Capped Bust Large Date dime graded as MS 66 by PCGS. Not only is...

By Bullion Shark LLC ......   If you hear someone refer to "gold eagles", you might think of the American Gold Eagle issued since 1986. But...

By Steven Cochran for Gainesville Coins ......   The 1965 Washington quarter was the first US quarter not made of 90% pure silver. This transition from...

By Joshua McMorrow-Hernandez for PCGS ......   Modern Proof coins have thrown many intriguing curveballs toward collectors over the years, with some of the most confusing...

By Jon Sullivan for PCGS ......   Perhaps the most well-known and popular mint error type is the off-center strike. The error is defined as a...

By Tom DeLorey ......   About 45 years ago, collector Del Romines came into my office at Coin World’s "Collectors Clearinghouse" with two well-worn 1943-P nickels...

By Bullion Shark LLC ......   In 1997, the United States Mint launched the American Platinum Eagle program to compete with other world mints that were...

By Jeff Garrett for Numismatic Guaranty Company (NGC) ......   In coin collecting, there is no right or wrong decision when it comes to deciding which...

By Doug Winter - RareGoldCoins.com ......   CoinWeek Content Partner   Liberty Head half eagles were produced from 1839 until they were discontinued in 1908. This long-lived series...

By Bullion Shark LLC ......   Though he is most widely known for his masterpiece of numismatic art, the $20 gold double eagle issued from 1907...

By Jack D. Young, Early American Coppers (EAC) ......   This is the last of my intended short Dark Corner articles - a fitting last example,...

While the country at large's desire for a large dollar coin at the start of the 1970s was hardly demonstrable, the gaming industry developed...