Professional Coin Grading Services is a division of Collectors Universe, Inc., the industry leader in third-party grading and authentication services for high-value collectibles. PCGS authenticates and grades collectible coins, trading cards, tickets, autographs and memorabilia. PCGS also compiles and publishes authoritative information about United States and World coins, collectible sports cards and sports memorabilia.
PCGS engaged Positronic to build a counterfeit detection application. Positronic built this application, developing innovative advanced computer vision techniques along the way. The application searches a coin database of millions of coin images in just seconds, showing just those other coins that have similar markings (dents, scratches, discoloration) for any given coin
