Mike Byers Mint Error News - Unique Proof 1971-S Eisenhower Dollar Overstruck on San Francisco Assay Office Medal

Unique Proof 1971-S Eisenhower Dollar Overstruck on San Francisco Assay Office Medal in Heritage...

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...
Heritage Auctions Offers Don Bonser Collection of US Coin Varieties

Heritage Auctions Offers Don Bonser Collection of US Coin Varieties

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...
The Full Date 1855-D Gold Dollar

The Full Date 1855-D Gold Dollar

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...
Modern Mules: The Rarest Error Coins

Modern Mules: The Rarest Error Coins

By Bullion Shark LLC ......   When it comes to error coins, a mule is simply a coin that was struck from a die pair that...
Bitcoin, Physical Cryptocurrency Featured in Stack’s Bowers Summer 2022 Auction

Bitcoin, Physical Cryptocurrency Featured in Stack’s Bowers Summer 2022 Auction

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...

In 2017 PCGS Certified Two Rare and Unusual Washington Quarter Errors

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...
Finest Known Proof 1825/4/1 Half Eagle From Mocatta Collection Offered by Stack’s Bowers

Finest Known Proof 1825/4/1 Half Eagle From Mocatta Collection Offered by Stack’s Bowers

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...
Rare Indian Head Cent Mint Error Coin to Be Auctioned by GreatCollections

Rare Indian Head Cent Mint Error to Be Auctioned by GreatCollections

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,...
The 1888 Morgan Dollar: Key Varieties & Prices

The 1888 Morgan Dollar: Key Varieties & Prices

By Steven Cochran for Gainesville Coins ......   The 1888 Morgan silver dollar is best known for its interesting die varieties. For collectors of rare varieties...
Stack’s Bowers Announces Inaugural Offering From Sydney F. Martin Collection

Stack’s Bowers Announces Inaugural Offering From Sydney F. Martin Collection

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

Collecting Morgan Dollars: An Overview

By Louis Golino, special to CoinWeek .....   As a collectible, Morgan silver dollars, minted between 1878 and 1921, have no real peer in American numismatics....
Unusual Standing Liberty Quarter Error in Stack's Bowers August Auction

Unusual Standing Liberty Quarter Error in Stack’s Bowers August Auction

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,...
Finest Known 1835 Matron Head Large Cent Offered by GreatCollections

Finest Known 1835 Matron Head Large Cent Offered by GreatCollections

GreatCollections is offering discerning collectors the opportunity to bid on an 1835 Matron Head large cent graded MS65 RB by PCGS. Certified by CAC...
Rare Bronze 1943 Lincoln Cent Comes to Heritage Auctions Long Beach/Summer FUN Event

Rare Bronze 1943 Lincoln Cent Comes to Heritage Auctions Long Beach/Summer FUN Event

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...
Unique Gold Buffalo Nickel Sells for $400,000

Unique Gold Buffalo Nickel Sells for $400,000

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...
July 5 Heritage Showcase Auction Features Mint Errors

July 5 Heritage Showcase Auction Features Mint Errors

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

Two Dramatic U.S. Mint Error Coins in the News

By Bullion Shark LLC ......   Recently, two important and unique United States Mint error coins – a very rare off-center Carson City Morgan silver dollar...
Bidding Already at $5,500 For Extremely Rare Dual Serial Number Error $5 Note

Bidding Already at $5,500 For Extremely Rare Dual Serial Number Error $5 Note

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...
Eliasberg Capped Bust Large Date Dime Offered by GreatCollections

Eliasberg Capped Bust Large Date Dime Offered by GreatCollections

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...
1839/8 $10.00 Gold No Motto Liberty Head Eagle, PCGS MS61. Images courtesy Doug Winter Numismatics

Liberty Head Gold Eagles

By Bullion Shark LLC ......   If you hear someone refer to "gold eagles", you might think of the American Gold Eagle issued since 1986. But...
1965 Silver Quarter Value: Error Coins and History

1965 Silver Quarter Value: Error Coins and History

By Steven Cochran for Gainesville Coins ......   The 1965 Washington quarter was the first US quarter not made of 90% pure silver. This transition from...
Differences Between 1981 Type 1 and Type 2 Proof Lincoln Cents

Differences Between 1981 Type 1 and Type 2 Proof Lincoln Cents

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...
Errors & Varieties: The Popular Off-Center Strike

Errors & Varieties: The Popular Off-Center Strike

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...
Previously Known 1943-S Doubled Die Cent Discovered to Be Overdate

Previously Known 1943-S Doubled Die Cent Discovered to Be Overdate

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...
The Rarest American Platinum Eagles

The Rarest American Platinum Eagles

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

Coin Collecting Strategies – Collecting By Die Variety

By Jeff Garrett for Numismatic Guaranty Company (NGC) ......   In coin collecting, there is no right or wrong decision when it comes to deciding which...
Liberty Head Half Eagle Gold Coins: A Guide for Collectors

Liberty Head Half Eagle Gold Coins: A Guide for Collectors

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...
Indian Head $10 Gold Coins: The Other Saint-Gaudens Masterpiece

Indian Head $10 Gold Coins: The Other Saint-Gaudens Masterpiece

By Bullion Shark LLC ......   Though he is most widely known for his masterpiece of numismatic art, the $20 gold double eagle issued from 1907...
From the Dark Corner: An "Authenticated" Counterfeit 1798 "S-158" Large Cent

From the Dark Corner: An “Authenticated” Counterfeit 1798 “S-158” Large Cent

By Jack D. Young, Early American Coppers (EAC) ......   This is the last of my intended short Dark Corner articles - a fitting last example,...
United States 1971-S Eisenhower Dollar with Blue Pack

United States 1971-S Eisenhower Dollar

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...