PSA Basics
What Is a PSA Cert Number, and Why Should You Check It?
Learn what a PSA certification number means, where to find it on a slab, and how collectors use cert lookup before buying or sharing graded cards.
May 28, 2026 · 4 min read
Every PSA slab has a certification number. It looks small, but it is one of the most useful pieces of information on the label.
Before you buy, sell, catalog, or share a graded card, the cert number helps connect the physical slab to the card details recorded by PSA.
Where to find the cert number
On most PSA slabs, the cert number appears on the front label near the barcode or QR-style code. It is usually printed as a sequence of digits.
That number is not the grade, set number, or card number. It is the unique identifier for that specific graded item.
Why collectors check it
A cert lookup can confirm the card title, grade, label details, and sometimes images. It is a quick way to catch obvious listing mistakes before you commit to a purchase.
It also helps when you are organizing your own slabs. Instead of typing the whole card name, you can use the cert as the anchor for the record.
Use it, but do not overshare it
Cert numbers are useful, but many collectors prefer to hide them in public posts. That keeps your listing photos cleaner and avoids unnecessary copying of your slab data.
Slabox can scan PSA cert numbers for your private collection and create share images where the cert can be masked when you post online.