Company founded in 1986 which provides third party authentication and grading services for many types of collectibles including coins, autographs, entertainment memorabilia and trading cards.
Online catalog of over 1,500 categories of vintage and antique objects. Their guides were first published in 2007 and range from jewelry, pens, advertising, books, machines, coines, stamps and more.
Founded in 1976, they are the largest collectibles auction house in the world. They specialize in US & world rare coins & currency, fine & decorative art, western art, illustration art, vintage comic books & art, movie posters, entertainment & music memorabilia, jewelry & timepieces, vintage & couture handbags, sports collectibles, historical & political memorabilia, rare books & manuscripts, American Indian art, air & space memorabilia, civil war memorabilia, vintage & contemporary photography, nature & science specimens, fine and rare wine, domain names and other intellectual property, luxury real estate and more.