How do I know if a Justin Herbert autograph is real?

The safest answer is authentication. A Herbert auto is trustworthy when it's either a manufacturer-certified card (a Panini-produced signature such as a Contenders Rookie Ticket, National Treasures RPA, or Immaculate auto, signed under witness and encapsulated) or a hand-signed item authenticated by a major third party (PSA/DNA, JSA, or Beckett) with a matching cert number you can verify on the authenticator's site. Loose 'hand-signed' cards with no certification are the highest-risk category.

Are sticker autographs fake?

No. A sticker autograph — where the player signs a clear label that the manufacturer applies to the card — is a legitimate, fully authentic auto. Many of Herbert's Panini cards use signed stickers. It is not a forgery; some collectors simply prefer on-card signatures for aesthetics, which is a value/preference question, not an authenticity one.

What is the most-faked kind of Herbert autograph?

Raw, uncertified 'hand-signed' base cards, index cards, photos, and mini-helmets sold cheaply by unknown sellers. Because there's no slab and no manufacturer witness, a forger only has to fake the signature — not an entire card. Certified Panini autos and third-party-authenticated items are far harder to fake convincingly.

How do I verify a PSA/DNA or JSA certification number?

Both PSA and JSA publish free online cert lookups. Enter the serial/cert number printed on the sticker or slab label and confirm the item it describes matches what you're buying — same player, same item type, same photo where shown. If the number doesn't resolve, describes a different item, or the seller can't provide it, walk away.

Is an autopen or preprint the same as a real autograph?

No. An autopen is a machine-reproduced signature and a preprint is a signature printed as part of the card art — neither is a genuine ink autograph and neither should be sold as one. Tells include perfectly uniform line width, no pen pressure or ink pooling, identical signatures across multiple copies, and a signature that sits under the card's coating rather than on top of it.

How to Spot a Fake Justin Herbert Autograph

Justin Herbert is one of the most-signed and most-forged modern quarterbacks in the hobby. High demand plus real dollar values means fake “hand-signed” cards, photos, and mini-helmets circulate constantly — especially raw items sold cheaply by unknown sellers. This guide is about autographs specifically: how Herbert autos are made, which formats are trustworthy, how to read a certification, and the red flags that give forgeries away. For general rookie-buying and reprint advice, see the collecting Justin Herbert cards guide.

Start here: certified beats “hand-signed”

The single most important habit in autograph collecting is simple:

Buy the certification, not the signature.

An autograph is only as good as the proof behind it. There are two kinds of proof worth trusting for a Herbert auto:

Manufacturer-certified cards. When you buy a Panini-produced Herbert autograph — a Contenders Rookie Ticket, a National Treasures RPA, an Immaculate or Flawless signature — the signing was witnessed and the card was encapsulated or serial-controlled by the manufacturer. The card is the authentication. These are the backbone of a serious Herbert auto collection.
Third-party-authenticated items. For anything hand-signed off the card assembly line — a signed photo, a signed base card, a signed mini-helmet — the trustworthy version carries a PSA/DNA, JSA, or Beckett authentication with a cert number you can verify online.

A signature with neither of those is a story, not a guarantee.

On-card vs. sticker autos — both are real

A common misconception is that a sticker autograph is somehow fake. It isn’t. In a sticker auto the player signs a clear adhesive label that the manufacturer then applies to the card; in an on-card auto the player signs the card surface directly. Both are genuine, authentic autographs. Many of Herbert’s Panini cards use signed stickers.

The on-card vs. sticker distinction is a preference and value question — many collectors pay a premium for on-card — not an authenticity question. Don’t let a seller frame a legitimate sticker auto as a defect, and don’t assume “on-card” alone proves anything; a forger can hand-sign a card surface too. Certification still rules.

How to read a certification

On a slab (graded/authenticated card): the label lists the player, card, and a serial or cert number. Look the number up on the grader’s site (PSA, BGS/Beckett, or SGC) and confirm the record matches the card in hand.

On a hand-signed item (PSA/DNA or JSA): the authenticator applies a tamper-evident sticker with a unique cert number, usually alongside a matching certificate of authenticity (COA). Steps:

Find the cert number on the sticker/COA.
Enter it in the authenticator’s free online cert lookup.
Confirm the record describes the same item — same player, same item type, same signature format, and the same photo where the lookup shows one.
If the number doesn’t resolve, describes a different item, or the seller “can’t find it,” treat the item as unauthenticated.

A COA from an unknown “authentication company” is worth roughly the paper it’s printed on. Stick to PSA/DNA, JSA, and Beckett for hand-signed Herbert items.

Red flags of a forged or machine signature

No single tell is proof, but stack these against the price and the seller:

No certification, high price. A “hand-signed” Herbert with no PSA/DNA, JSA, or Beckett cert — especially a valuable-looking one — is the number-one risk category.
Autopen / preprint uniformity. Machine or printed signatures show perfectly uniform line width, no pen-pressure variation, no ink pooling at stops and starts, and often identical signatures across multiple copies. A printed signature also sits under the card’s glossy coating instead of on top of it.
Ink that doesn’t belong. Genuine ink autos show pressure, small speed variations, and sometimes minor ink pooling. A signature that looks “too perfect” or laser-crisp is suspect.
Bargain pricing. A signed rookie at a fraction of the going rate for a certified copy is a red flag, not a steal.
Stock photos and vague listings. “Signed, comes with COA” plus a generic photo and a no-name COA is a classic pattern. Demand clear photos of the actual item and its cert.
Feedback and returns. Buy from sellers with strong, relevant feedback and a returns policy; authentication guarantees mean nothing from a seller you can’t hold accountable.

Where forgeries concentrate

Fakes cluster where authentication is cheapest to skip: raw signed base cards, index cards, 8×10 photos, and mini-helmets from unknown sellers. Manufacturer-certified Panini autos and third-party-slabbed items are far harder to fake convincingly because the forger would have to counterfeit the slab, the label, and the cert record — not just the signature. That’s exactly why certified formats are the safe lane.

A simple safe-buying checklist

Prefer manufacturer-certified Panini autos (Contenders, National Treasures, Immaculate, Flawless) or third-party-authenticated hand-signed items.
Verify the cert number on the authenticator’s own site before you pay.
Treat on-card vs. sticker as preference — both are authentic.
Walk away from uncertified “hand-signed” items, no-name COAs, and prices that look too good.
Price against sold comps for the same certified format, not asking prices.

Keep going

Ready to shop authenticated Herbert autos? Browse the Justin Herbert autographs & top cards page, which surfaces live eBay listings for his signature cards. For the broader rookie landscape see the rookie card checklist across every 2020 brand and the Justin Herbert rookie cards list, and for a general market overview the card values guide. If you’re deciding whether to grade a raw signed card, the grading ROI calculator can help. You can also explore the Justin Herbert player hub and the Los Angeles Chargers team page.