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PSA was launched in July 1991 by David Hall, owner of the coin grading company Professional Coin Grading Service (PCGS), to serve collectors as a third-party card grader. [1] At the outset, the business faced difficulties owing to a limited demand from collectors who sought card grading services. [2]
Collectors Universe Inc. is an American company formed in 1986, now based in Santa Ana, California, which provides third-party authentication and grading services to collectors, retail buyers and sellers of collectibles. Its authentication services focus on coins, trading cards, sports memorabilia, and autographs.
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Numismatic Guaranty Company (NGC) is an international third-party coin grading and certification service based in Sarasota, Florida. It has certified more than 60 million coins. NGC certification consists of authentication, grading, attribution, and encapsulation in clear plastic holders.
Cards are evaluated by third-party services, most often Professional Sports Authenticator (PSA), Beckett Grading Services (BGS) and Sportscard Guaranty (SGC), and given a grade on a ten-point scale based on condition. [5] The images below do not necessarily represent the individual specimen sold but are representative of the given cards.
A rookie card is a trading card that is the first to feature an athlete after that athlete has participated in the highest level of competition within their sport. [1] [2] Collectors may value these first appearances more than subsequent card issues.
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This article is a list of PSA men's number 1 ranked players in the Official Men's Squash World Ranking. The PSA Ranking are the Professional Squash Association's (PSA) merit-based method for determining the world rankings in men's squash. The top-ranked player is the player who, over the previous 12 months, has garnered the most PSA ranking points.