Comparison
GradeX vs SGC
GradeX predicts SGC grades and surfaces defect maps before you ship a card to SGC for slabbing — particularly useful for vintage where a single corner crease can move a card three full grades.
At a glance
SGC (Sportscard Guaranty Company) is a long-established grader best known among vintage collectors for its iconic black-and-white tuxedo slab and historically faster turnaround than PSA. Recently a major auction-house favourite for pre-WWII cards.
Side-by-side
| Attribute | GradeX | SGC |
|---|---|---|
| Type of service | AI grade prediction app | Physical grading service with tuxedo slab |
| Specialisation | Modern + vintage, sports + TCG | Strong reputation on vintage / pre-WWII |
| Turnaround | ≈60 seconds per scan | Typically 5–25 business days — historically faster than PSA / BGS |
| Cost per card | Free or $9–$29/mo subscription | ≈$20–$200 depending on tier, declared value, and turnaround |
| Grading scale | Maps to PSA 1–10 / BGS / CGC equivalents | 1–10 scale with half-grades |
| Vintage authentication | AI flags inconsistencies; no formal authentication | Strong vintage authentication track record |
| Defect surfacing | Per-defect markers on front and back | Final grade only; defect notes not provided |
| Pop report | Not applicable (predictions only) | Public pop report; smaller universe than PSA |
When to choose GradeX
- Pre-screen vintage cards where you suspect a hidden crease, paper loss, or trim — GradeX's defect map will surface what your eye glossed over.
- Decide between PSA / BGS / SGC before submitting by comparing the predicted grade across all four houses.
- Sell raw if the prediction is sub-7 — slab fees rarely make sense at the lower end.
When to choose SGC
- Vintage cards where SGC's tuxedo slab is the recognised grading standard among collectors of that era.
- Cards where SGC's faster turnaround beats PSA's queue without sacrificing grader credibility.
- Submitting to a grader whose vintage authentication is widely trusted in the auction-house ecosystem.
The short verdict
For vintage, GradeX's defect map is the highest-value pre-flight check — many vintage cards lose grades from defects buyers don't spot until they hold the slab. Run the scan, evaluate the marketplace target prices, then submit to SGC if the math works.
Quick answers
Does GradeX predict an SGC grade specifically?▾
GradeX predicts on the PSA / BGS / CGC / TAG rubric. SGC's grading philosophy is closely aligned with PSA, so the PSA prediction is a strong proxy for what SGC would issue — especially on modern cards.
Is GradeX better for vintage or modern cards?▾
Both. The AI is trained on a broad sample including vintage. The single biggest pre-submission win for vintage is the defect map, which surfaces wear that's easy to miss visually.
When should I pick SGC over PSA?▾
Vintage cards (especially pre-WWII) where SGC's tuxedo slab and authentication track record are recognised — and when SGC's faster turnaround beats PSA's queue. GradeX's prediction is the same either way; the choice between graders is a market and turnaround question.