Abstract: A protective case is provided for tamper-proof, long term presentation and display of a collectible baseball. The case consists of a transparent dome, a baseplate that seals the dome, and a transparent disc that secures a documentation panel to the underside of the baseplate. The dome and baseplate are configured such that the baseball is held therebetween in an immobilized state. With the baseball in place, the dome and baseplate are bonded together, preferably by cohesive bonding techniques such as sonic welding.

Abstract: A transparent plastic case is provided for the protective long term storage of flat collectible items. The case is comprised of first and second panels of matching elongated rectangular perimeter adapted to be cohesively sealed to enclose a collectible item disposed in a transparent retainer, and a documentation card. The dimensions of the case relative to the retainer are such that the collectible item within a sealed case is not tightly pressed against the retainer. The panels are further configured to facilitate stacking of a number of the cases.

Abstract: A transparent plastic case is provided for the protective long term storage of sports cards. The case is comprised of front and rear panels of matching elongated rectangular perimeter adapted to be cohesively sealed to enclose a sports card and a documentation card. The dimensions of the case relative to the sports card are such that the sports card within a sealed case is free to move slightly. The panels are further configured to facilitate stacking of a number of the cases.