The Collectible Encyclopedia
Discover, learn, and understand collectibles across every category. History, rarity, authentication, grading, and market insights — all in one place.
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Video Games
Super Mario Bros. (NES): The Game That Saved Gaming
Super Mario Bros. (1985) for the NES revitalized the video game industry and became one of the best-selling games of all time. Sealed copies now sell for record-breaking prices.
Stamps
The Inverted Jenny: America's Most Famous Stamp Error
The Inverted Jenny (1918) is America's most famous stamp error, featuring an upside-down biplane. Only 100 examples exist, making it one of the most valuable stamps in the world.
Trading Cards
Pokemon Cards: The Complete Collector's Guide
Pokemon cards launched in 1999 and became one of the most popular collectible card games in history. Learn about first editions, shadowless prints, holographics, grading, and what makes certain cards worth thousands.
Coins
Morgan Silver Dollar: History, Rarity & Values
The Morgan Silver Dollar (1878-1904, 1921) is one of the most collected US coins. Learn about key dates, mint marks, the Carson City mystique, and what makes certain Morgan dollars worth six figures.
Comics
Action Comics #1: The First Superman & Holy Grail of Comics
Action Comics #1 (1938) introduced Superman to the world and is the most valuable comic book ever published. Learn about its history, rarity, grading, and why copies sell for millions.