Every established show enforces rules against counterfeit and altered items for a reason: the problem is real enough that it needs a written policy, not just good faith. It's also, in practice, rare at a well-run show with badged, accountable vendors — but "rare" isn't "never," and the collectors who get burned are almost always the ones who skipped a thirty-second check because they were excited. Here's what that check actually looks like.
Autographs: what to look at first
Ink flow and pressure
A real signature has natural variation in pressure — thicker where the pen slowed down, thinner where it sped up, with the kind of inconsistency a human hand produces without thinking about it. A printed or stamped "autograph" has uniform ink density from start to finish. Tilt the item under a light and look at the sheen. Real ink sits on top of the surface with a slight texture you can sometimes feel with a fingertip through a sleeve. Printed ink is flat.
Consistency against a known exemplar
Most well-known athletes have fairly consistent signatures, but not identical ones — letter formation, slant, and starting point vary slightly between two real autographs from the same person. A signature that looks pixel-perfect identical to another sample you've seen online is more likely a tracing or a print than the real thing. Genuine human signatures don't repeat like a stamp.
Certification, and where it comes from
A certificate of authenticity is only as good as the company that issued it. Ask which authentication company backed the signature, and look for a matching hologram or serial number you can independently verify — most major authentication companies let you look up a cert number on their own website. If a seller can't tell you who authenticated an item, or the story changes when you ask twice, that's your answer.
"Trust me" is not a certification. A verifiable cert number is.
Reprints: the card itself, not just the image
Reprints are a different problem from fake autographs — usually not an attempt to defraud anyone, since most are sold openly as reprints, novelty items, or reproductions. The issue is when one gets mixed into a stack and priced like an original. A few checks:
- Card stock thickness and texture. Vintage cards from decades past were printed on stock with a specific weight and finish that modern printers rarely replicate exactly. A card that feels too smooth, too thin, or too glossy for its supposed era is worth a second look.
- Back-of-card printing quality. Reprints frequently show slightly blurrier text or a different font weight on the back than a genuine original from that print run.
- Centering and cut quality. Original vintage cards were often hand-cut in factories with real variance. A reprint cut on modern equipment can look suspiciously too perfect — or in cheaper reprints, too far off in the opposite direction.
- Copyright text. Some reprints include modern copyright lines or manufacturer marks that didn't exist when the original card was printed. If the back says something that couldn't have existed in the card's supposed year, that settles it.
Questions worth asking, out loud, at the table
You don't need to accuse anyone of anything. You just need information:
- "Is this graded or authenticated by a third party?"
- "Do you have the cert number I can look up?"
- "Where did this piece come from?"
A dealer with nothing to hide answers these instantly and usually appreciates that you asked — it tells them you're a serious buyer, not someone they need to walk through the basics. A dealer who gets defensive or vague at a straightforward question is telling you something too.
When in doubt, don't
The single best rule at any show: if you can't verify it and the price feels aggressive for what it is, walk away. A real card or a real autograph will still be gettable from someone else — possibly the table right next to it. There is no version of this hobby where the right move is talking yourself into a purchase you already have doubts about.
If you're building toward grading or reselling anything you buy, it's worth reading up on how grading companies evaluate authenticity as part of their process — a professional grade is, among other things, a second layer of exactly this kind of check.