How to Pre-Grade Your Cards: A Collector's Checklist for More 9s and 10s
Experienced submitters run every card through the same mental checklist before it ever reaches PSA, BGS, or CGC. Here is that checklist, in order, and how CGI Vision runs it for you in under a minute.
Why Order Matters When You Self-Grade
Most collectors who pre-screen their own cards do it in a scattered way — flip the card over a few times, squint at it under a lamp, decide it "looks like a 10." The collectors who consistently call their own grades correctly do something different: they run the same checklist, in the same order, every single time. Order matters because some defects are easy to spot and some hide, and checking the obvious stuff first lets you sort a stack quickly before you slow down for the details.
Here is that checklist, and what to look for at each step. CGI Vision runs the same four checks automatically — this guide doubles as a look at what the AI is actually measuring when it hands you a predicted grade.
Step 1: Centering, Front and Back
Centering is the fastest thing to screen for, and it is also the least forgiving. On the front of the card, graders are strict — a card that looks "close enough" to the eye can already be outside the window that separates a 10 from a 9. On the back, the standard loosens up considerably, so a front that is dead-on with a slightly looser back is normal and not a red flag.
The trap here is that human eyes are bad at judging small percentage differences. A card that is 52/48 and a card that is 58/42 can look nearly identical side by side, but only one of them is gem-mint centering. This is exactly the kind of measurement that benefits from a tool rather than a glance — CardGrade's centering tool measures the actual border ratio on all four sides from a photo, so you get a number instead of a guess.
Step 2: Damage — Dents, Dings, Creases
Check this before corners or edges, because it overrides everything else. A single dent, even a small one you can barely feel with a fingernail, caps a card hard — often down into the 5-7 range regardless of how clean the rest of the card is. This is the one defect category where severity does not scale gently; a little bit of damage does an outsized amount of harm to the grade.
Run your thumb and eye across the whole card, front and back, looking specifically for anything that disrupts the surface plane — not just marks, but actual deformation. If you find one, stop evaluating that card as a 10 candidate immediately and move on to the next one.
