Authenticate The Value of Your Collectibiles and
Memorabilia
Many students ask me how to determine the value of their collectibles and memorabilia. There are several factors that would be used to determine this for each item and category. Sellers can always check the prices of popular collector marketplaces such as eBay. But what if you want to have the item "Authenticated" before you list your item?
Below are my recommendations for Professional Authenticators covering a variety of collectible categories. Each authenticator offers a different service and most will require payment. So go slow at first with just a few items to determine if the chosen service meets your requirements.
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Sports Autographs PROVA Group
and Memorabilia Certified Authentication Services
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Numismatic Guaranty Corporation
Professional Coin Grading Service
American Numismatic Association
Coins
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American Philatelic Expertizing
Stamps
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International Gemological Institute
Gemological Institute of America
Jewelry, Gems, Diamonds
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Beanie Babies
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American Political Items Collectors
Political Memorabilia
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