Graded Card: A trading card that has been examined by a third-party service (see below) grading specialist for condition and assigned a specific numerical grade, that corresponds with the card’s physical condition.
Grading Company: An independent, third-party service (see below) that specializes in examining cards for physical condition and assigning the card a corresponding numerical grade for the card. Today, the trading card market recognizes the following companies as industry leaders: Professional Sports Authenticators (PSA), Beckett Grading Services (BGS) and Sports Card Guaranty (SGC). Other reputable companies that collectors will encounter include Global Authentication Inc. (GAI) and International Sports Authentication (ISA).
Ultra-Pro® Single Card Screwdown. Acrylic. 4 screws. Beveled edges. 3-1/8 x 5-3/16 x 1/4″. Crystal clear. Acid-free. This recessed Screwdown holds a card up to 2-1/2 x 3-1/2″ and 32 points thick.