Mike Byers is president of Byers Numismatic Corp., a California corporation dealing in numismatics and the largest dealer of the world's rarest mint errors. He specializes in U.S. and World Major Mint Errors and Die Trials. He has been a professional numismatist for over thirty years, has handled major coin collections and attends every major coin convention. Byers Numismatic Corp. carries an extensive inventory as well as solicits want lists and is always looking to purchase fresh inventory and collections.
In the last decade, Mike Byers has made more discoveries of major mint errors both in the United States and around the world than any other dealer. He is now the largest dealer of the world’s rarest mint errors. Mikebyers.com was launched in 1999 and today it is considered the most widely viewed and informative mint error website. The website has over 600 pages filled with articles, discoveries, breaking news and thousands of images of the most spectacular and dramatic major mint errors available on the market today.
Included in his premier inventory of U.S. and World major mint errors and die trials are many discovery pieces which have been featured on the front page of Coin World, the world's #1 publication for coin collectors. Coin World published the following coins that Mike Byers discovered as front page articles:
1999 State Quarters Struck on Experimental Planchets Certified by PCGS
Transitional Sacagawea & SBA Dollars Certified by PCGS
Martha Washington Cent Test Piece Certified by NGC
Canadian Cent Struck with Two Reverse Dies Certified by PCGS
1910 Lincoln Cent Uniface Test Strike Certified by PCGS
Unique 1920 Buffalo Nickel Struck in Copper Certified by NGC
Other discoveries by Mike Byers that were also featured in Coin World include:
State Quarters & Other Denominations Struck on Feeder Finger Tips Certified by PCGS & NGC
Additional Martha Washington Test Pieces in Several Different Denominations Certified by NGC
The Only Known State Quarter Dual Date, Dual State Certified by ANACS
An Assortment of World Coins Struck with Either Two Obverse or Two Reverse Dies Certified by NGC & ANACS
Additional discoveries by Mike Byers featured as cover stories in different issues of Mint Error News Magazine include:
- Unique 1866 $2˝ Struck on a 3 Cent Nickel Planchet Certified by NGC
- 1804 $2˝ Capped Bust Double Struck Certified by NGC
- 1806 $5 Capped Bust Triple Struck Certified by PCGS
- Canadian Cent Die Cap with Two Reverse Dies Certified by PCGS
- 1971 ˝ Pence Great Britain Struck with Two Obverse Dies Cu-Ni Certified by NGC
- Unique Jefferson Nickel Die Trial by Di Francisci Certified by PCGS
- Unique Five Piece "Two Tailed" Euro Set Certified by ANACS
- 1989-D Lincoln Cent Transitional Double Struck on Bronze Planchet Certified by ICG
- Unique 3˘ Nickel Struck on 1˘ Stock Certified by NGC
In 2003, minterrornews.com was launched, which was originally sponsored by Mike Byers and ANACS. Due to the popularity of mint errors and the magazine it is now sponsored by Mike Byers and several other mint error dealers. It is a website devoted to bringing the latest mint error news and information to the collector. There are now over 500 articles with features, discoveries, news stories, and mint error related info from the United States and around the World. This website became so popular that a print version, Mint Error News Magazine, was created and is read by thousands of readers.
Mike Byers was a consultant to ANACS for Mint Errors from 2000 to 2006. He is the Editor and one of the Sponsors for minterrornews.com. He is also the Publisher and Editor of Mint Error News Magazine.
Mike Byers is a life member of ANA since 1985, a charter member of NGC and a featured dealer/member of PCGS. He is a founder member of the California Coin & Precious Metals Association. He is also a life member of the Central States Numismatic Society, the Florida United Numismatists and a member of ICTA. He is member A71 in the Certified Coin Exchange (CCE).
Mike Byers was the featured author in the October 9, 2009 issue of The Coin Dealer Newsletter (Vol. XXXIV No. 10) with a front-page article on mint errors.
In 2009, Mike Byers published his first book, World's Greatest Mint Errors. This book combines stunning imagery with the most accurate information available to provide anyone interested in mint errors with the latest information on mint error coins from the United States and around the world. Hundreds of spectacular mint errors are pictured. Each error coin photo is presented in full color, and enlarged to enhance the smallest details. Some of the error coins featured in this book have never been seen by the public before, and each is described in great detail as to the type of error, the assigned grade, rarity and estimated value. Click here for more information and to puchase.

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