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The Philadelphia Find: Lonesome John Error Coin Time Capsule Surfaces With 1943 Steel Cent...
A 40-Year Philadelphia Time Capsule Reveals a Lonesome John Error Coin Treasure
A routine search on a digital marketplace led Daniel Sassa to one of...
Unique 1977 Lincoln Cent Struck in Aluminum: The Modern Penny That Should Not Exist
The 1977 Aluminum Penny That Should Not Exist
A 1977 Lincoln cent should be copper-colored. It should also weigh about 3.11 grams. Yet one extraordinary...
2013-D Lincoln Shield Cent Double Denomination: A One-of-a-Kind Modern Mint Error
The 11-Cent Error: A Lincoln Shield Cent Double Denomination Struck Over a Struck Dime
A 2013-D Lincoln Shield cent struck over a 2013-D Roosevelt dime...
Classic Mint Errors Collectors Still Chase the U.S. Overdate Coins of the 20th Century
The Mint Mistakes That Created America’s Most Famous 20th-Century Overdate Coins
Mint errors fascinate collectors, but they also create confusion.
Each month, grading services and dealers...
Unique 1830 French 5 Francs Off-Center Error Survived Nearly 200 Years
A Royal French Coin With a Mint Error Twist
The Paris Mint struck millions of silver 5 francs coins during the 19th century. Most served...
Why Lincoln Cents Struck on Roosevelt Dimes Remain So Popular
A 1986 Lincoln Cent struck on a Roosevelt dime planchet grabs attention at first glance. It looks like a penny, yet it shows the...
Unique Lincoln Cent Mint Error Discovery: The Only Known Double-Struck Doubled Die
By Mike Byers at MintErrorNews for CoinWeek
A newly surfaced Lincoln cent discovery now ranks among the most important modern United States mint errors known.
This...
1937-D “3-Legged” Buffalo Nickel : A Collector’s Guide
1937-D 3-Legged Buffalo Nickel: Value, History, and the $84,000 Stack’s Bowers Specimen
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The 1937-D 3-Legged Buffalo Nickel ranks among the most famous modern...
The Unique Nürnberg “1700” Gold Piefort That Recasts a Famous Paschal Lamb Series
By Mike Byers - MintErrorNews .......
Unique Gold Piefort -Nürnberg "1700" 2 Ducats
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1864 Two-Cent Piece : A Collector’s Guide | CoinWeek
By CoinWeek Notes .....
The Birth of the Two-Cent Piece in 1864
In 1864, Congress passed the Coinage Act of 1864 and introduced a brand-new denomination:...
The 1961 Proof Doubled Die Reverse Franklin Half Dollar Still Rules the Series
ReverseBy CoinWeek
Collectors enjoy the Franklin half dollar for many reasons. Some chase the famous “Bugs Bunny” pieces for their nickname and visual charm. Yet...
A Double-Struck Fugio Cent in Mint State? A Discovery That Stops Collectors in Their...
Finding a high-grade example of America’s first federally authorized coin is exciting. However, discovering one with a dramatic mint error is something else entirely....
PCGS Certifies Second-Finest Known Buffalo Nickel Struck on a Dime Planchet
A Stunning Mint Error Emerges from a Long-Held Collection
In late 2025, a remarkable discovery surfaced from an old-time mint error collection. Among several rare...
Unique 1963 Franklin Half Dollar on Wrong Planchet May Be an Experimental Test Piece
A Discovery That Rewrites What We Know
Every so often, a coin surfaces that forces collectors to rethink what is possible. This newly documented 1963...
First Auction Appearance: Legendary 1887 Morgan Dollar Error Heads to GreatCollections
A legendary rarity has surfaced, and collectors are paying attention.
One of the greatest U.S. coin errors ever discovered, the 1887 Morgan Silver Dollar double...
