GEM-MT 10 (Gem Mint): A PSA GEM-MT 10 is a virtually perfect card, from its four sharp corners and no creasing to its sharp focus and full original gloss intact. A card that earns this distinction must be free of any staining, though allowances are made for slight printing imperfections if they don’t impair the card’s overall appeal. The image must be centered on the card within a tolerance not to exceed 55/45 to 60/40 percent on the front and 75/25 percent on the reverse.