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Numismatic Guaranty Corporation, a division of Certified Collectibles Group, Inc, is probably the preferred grading service of Cuban collectors, for the quality of both their services and their set registry.
Professional Coin Grading Services, a division of Collectors Universe, Inc, has been one of the leading coin grading and authentication services. They offer set registry and population reports of Cuban coins.
The American Numismatic Association, founded in 1891, is an educational organization dedicated to educating and encouraging people to study and collect money and related items. The Association serves the academic community, collectors and the general public with an interest in numismatics.
The Cuban Numismatic Association was founded in 2004 with the goal of encouraging and promoting Cuban numismatic knowledge, culture, education and fraternal relations among the numismatic community. The CNA holds an annual meeting at the Winter FUN Convention.
Colnect (collect + connect ==> Colnect) is a comprehensive online solution for collectors of mass-produced collectibles (stamps, coins, phonecards and so many more) revolutionizing the collecting experience by providing online personal collection management within a designated community.
Error-ref.com 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.