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Many websites provide additional information about die varieties and errors coins, or they provide opportunities to add nice die varieties and errors to your collections.  Following are websites that may be of interest to you.  You can access them by clicking on their links.  If you are familar with other websites that would be useful to collectors of die varieties, please send us a link to the site so that we can add it to those on this page.

ANACS:  ANACS is a professional third party grading service.  ANACS was founded in 1972 by the American Numismatic Association (ANA) and sold to Amos Press in 1990.  In December 2007, ANACS was acquired by Driving Force, LLC of Colorado and on January 1, 2008 ANACS relocated to Englewood, Colorado where it is headquartered today.  ANACS will encapsulate die varieties with the Wexler File numbers when they can be verified.  When sending die varieties to be encapsulated with the Wexler File numbers it will help to include any documentation to help ANACS verify the listing.  This could include reference to one of the many books that I have authored or coauthored, reference to varieties listed on my website, or a copy of any letters that are included when the coins are returned from being attributed.  http://www.anacs.com/Default.aspx

Brian's Variety Coins:  A large selection of doubled dies, RPMs, and error coins.  The site also hosts the Wexler doubled die listings for the Ocean In View Jefferson nickels.  http://www.briansvarietycoins.com/

CONECA:  CONECA (pronounced: CO´NECA) is a national numismatic organization devoted to the education of error and variety coin collectors. Its focus is on many error and variety specialties, including doubled dies, Repunched mintmarks, multiple errors, clips, double strikes, off-metals and off-centers -- just to name a few.   CONECA publishes an educational journal, The Errorscope, which is printed and mailed to members bimonthly and it offers a dynamic website.  In recent years the website has offered news stories on member finds, auction results, educational stories, research, etc., some of which are found nowhere else.  CONECA has expanded its website to include an area dedicated to 20th and 21st Century die varieties (administered by James Wiles) and an Error-Variety Coin Forum where folks can ask questions, give answers, share opinions or theory in addition to sharing images.  CONECA is now creating a members only area for the website that should be functional soon and will not detract from existing features that are now offered to members and nonmembers alike.  http://www.conecaonline.org/

Coppercoins.com:  This is a site dedicated to the one cent and two cent pieces, but also includes patterns, colonial coins, and tokens struck in copper.  The site includes die varieties such as doubled dies, RPMs, OMMs, overdates, and other mint mark varieties.  The die varieties are assigned Coppercoins.com die variety numbers which are cross-referenced to Wexler, Crawford, and CONECA whenever possible.  The varieties are well illustrated with photos.  http://www.coppercoins.com/

Eric Axtell's Die Varieties:  Plenty of nice die varieties for sale from a very knowledgable collector.  https://sites.google.com/site/rpmcoins/

Error-Variety Ready Reference:  Error-Variety Ready Reference is a project initiated by Mike Diamond, BJ Neff, Jeff Ylitalo, Jason Cuvelier, Fred Weinberg & Jon Sullivan.  It is a comprehensive illustrated glossary of every conceivable defect associated with the minting process.  It will contain detailed illustrated descriptions of hundreds of basic error types, numerous subtypes, and assorted effects associated with them.  It is not designed to cover compound errors and multiple errors, as these occur in an infinite number of combinations and permutations.  It is also not intended to be a catalog of specific coins and dies.  The Ready Reference is built upon a framework provided by a 22-page Comprehensive Error-Variety Checklist that was compiled by Mike Diamond some years back and that he continually updates.  The checklist is available on this website.  http://www.error-ref.com/

Fly-In Club:  This is a club devoted to the Flying Eagle and Indian Head cents.  While it encompasses all aspects of these coinage series, it also researches and catalogs the die varieties for these series including doubled dies, repunched dates, misplaced dates, and overdates.  http://www.fly-inclub.org/

Franklin Lover's Website:  As the title suggests, this site is devoted to the Franklin half dollar.  This new site plans to feature information about Franklin half dollar die varieties such as doubled dies, RPMs, and OMMs so it is a site that variety collectors will want to check out.  http://franklinlover.yolasite.com/

Fred Weinberg & Co.:  Fred Weinberg is a dealer in major error coins.  You will not find die varieties at this site, but if you are interested in major errors such as off centers, broadstrikes, double struck coins, brockages, etc., etc., this site is an absolute must.  Fred has been in the hobby since the 1960's and is one of the nicest guys you could deal with.  You can e-mail Fred at Fred@fredweinberg.com and visit his website at  http://www.fredweinberg.com/

Ken Potter's Variety Vault:  This site is loaded with information and news about die varieties and error coins.  It also features die varieties, error coins, and books for sale.  Ken is one of the leading experts in error and variety coins with articles appearing in both Coin World and Numismatic News.  http://koinpro.tripod.com/

Kevin Flynn's Website:  Noted author and coin resaercher Kevin J. Flynn has started his own website where you can find information about books written by Mr. Flynn, upcoming book projects, and even coins for sale.  Kevin has coauthored books with a number of leading die variety specialists (myself included) and his books on the 19th century series are the leading source of information on die varieties in those series.  http://kevinjflynn.com/

MAD Die Clashes:  Originally designed to be a source of information on Misaligned Die Clash (MAD Clash) errors, the site has expanded to include other unusual die clash errors.  The site was created by Mike Diamond, Robert Piazza, Jason Cuvelier, and Robert (BJ) Neff.  http://www.maddieclashes.com/

Marilyn Keeney's Coin Corner:  The "Queen of the 2009 Doubled Die Varieties" now has a website designed to make the 2009 Lincoln cent doubled die varieties available to collectors.  http://www.marilynkeeneyscoincorner.webs.com/

Rich Schemmer's Error Coins:  Rich Schemmer is a dealer in major error coins and a name that you can trust in the hobby.  In addition to an on-line store for error coins, this site also maintains an on-line newsletter.  http://www.richerrors.com/

Seated Dime Varieties:  This is the definitive resource for collectors of the Liberty Seated dimes.  Access to the information on this site is available without the need to login and without passwords.  The information is available for use in research, but users are reminded that the information is copyrighted and must be properly referenced when used.  http://www.seateddimevarieties.com/

Shield Nickels:  This site is devoted to the Shield Nickel and includes information on Shield Nickel varieties.  http://www.shieldnickels.net/

SSDC:  The SSDC is the premier collector organization dedicated to the study of Morgan and Peace Silver Dollar varieties.  Their charter is to help educate the collector base on the known varieties and help in the attribution thereof.  If you like Silver Dollars and you want to take your knowledge of them a step or two further, this is the site for you!  The site has come up with a very interactive way to discuss these coins and tied the majority of their information to the VAMworld.com website.  http://www.ssdcvams.com/

Trail and Wavy Step Variety Dies:  This is a website devoted to a new variety type known as "Trail Dies" and the related variety type known as "Wavy Step" varieties.  The site is maintained by Robert Piazza and Robert (BJ) Neff.  Over 750 dies exhibiting these varieties are featured at this site.  http://www.traildies.com/

VAMworld:  This site is devoted to Morgan and Peace dollar die varieties, known as VAM varieties. It is open for all members to contribute, edit and improve. The owners hope that it will become a repository for all VAM knowledge. If you have information about VAMs, or can help populate this site, you are asked to share the information at this site.  http://www.vamworld.com/