Trading Card Glossary › Grading & Authentication
Slab
Also known as: holder, case
A slab is the tamper-evident, hard plastic holder that a grading company (PSA, BGS, SGC, CGC, etc.) seals a card inside after grading. The slab protects the card from damage while displaying the card's grade, certification number, and other details on a label. Slabs have standardized sizes and are designed to prevent tampering — if the slab is opened, it cannot be resealed without it being obvious. Collectors often refer to graded cards simply as "slabs."
Related terms