The “Cadillac” holder of the Pro-Mold Line of card holders. It features arrowhead recessed corners that keep the card’s corners from getting touched and damaged. This baseball card display case is basically an oversized thicker one screw screwdown (about twice as thick). Strengths: Ideal for storage of those “Big Money” Cards. This is an absolutely gorgeous baseball card display case that really makes the baseball card stand out. Weaknesses: Expensive but well worth the investment to protect high value cards. Aliases: One Screw, Real Thick Card, PC-16 Made by Pro Mold.