Autographs 101 · Collector guide
How to tell if an autograph is authentic
1. Ask where the autograph came from
Ask who obtained the signature, when and where it was signed, and which receipts, signing photographs or correspondence support that account. Keep a seller's statement labeled as a claim until you can substantiate it.
A detailed story is useful context, not proof by itself. If the seller cannot answer important questions, decide whether you are comfortable with that uncertainty before committing.
2. Examine the whole item and the signature
Request clear, unfiltered photographs of the whole object, the signature, the reverse and any labels or documents. Check whether the listing describes an original hand-signed item, a print, a facsimile or an autopen signature.
Compare relevant known examples, including differences in signing era and surface. Visible similarities or differences can inform questions; they are not a reliable do-it-yourself verdict. A photograph cannot expose everything an examiner can inspect on the physical object.
3. Rule out printed, stamped and autopen signatures
Many signatures that look real are reproductions. A pre-printed (facsimile) signature sits flat on the surface; under magnification it may show a printed dot pattern and no pen indentation. A rubber stamp tends to leave uniform ink with crisp, even edges. An autopen machine traces a stored signature, so examples can be near-identical to each other, with steady line weight and blunt starts and stops.
Secretarial signatures, signed by staff on someone's behalf, are another common problem with mail requests and older fan mail. If several examples from the same source look identical in size and shape, treat that as a question to investigate, not a reassurance.
4. Look at how the signature was written
A signature written at speed usually flows, with lighter, tapered strokes where the pen lifted. Shaky lines, blunt starts, stops in odd places and uneven pressure can suggest it was drawn slowly by someone copying it. Compare letter shapes, slant, spacing and size with known examples from the same era and on a similar surface, since signatures change over a career.
Check that the ink and pen suit the item and its date: a modern paint marker on an item claimed to be signed decades earlier is a reason to ask more questions. These observations help you decide what to investigate; they are not a verdict.
5. Verify the certificate with its issuer
Use the issuing company's official verification service. Compare available signer, item type and identifying details with the object being offered. Contact the issuer when a record is missing or inconsistent.
A real certificate number can be copied onto a different object. A matching lookup is one piece of evidence, not proof that the item in front of you is the one the issuer examined.
6. Check the price and the seller
A price far below what similar authenticated pieces sold for is a warning sign, not a bargain. Compare completed sales, not asking prices, and look at what certification those sold pieces carried.
Look at the seller's history, return policy and how specifically they answer questions. Pay with a method that offers buyer protection, and keep the listing, messages and photos with your record of the piece.
7. Decide whether to seek professional authentication
For a purchase, sale or trade that depends on authenticity, ask a provider about its accepted items, required examination, documentation and current charges. Include shipping and insurance in the budget. Do not assume a submission will pass or that a failed submission is free.
Authentication considers genuineness; grading evaluates specified quality or condition; valuation estimates a price. Confirm the service you need. PSA describes examination of autograph structure, ink and the object, with comparison against references. JSA describes expert examination and comparison with exemplars.
Can an app or quick opinion authenticate my autograph?
Autographs 101 Pre-Screen is an AI-powered preliminary review. It is not a certificate of authenticity, an appraisal or a guarantee that a professional authenticator will accept an item.
Photo-opinion services also have limits. Beckett explicitly distinguishes its Signature Review from full authentication. Use the result to decide what to investigate next, while retaining the original photos and supporting evidence.
What can I do before I buy?
Write down the missing evidence and ask the seller specific questions. Confirm the stated return process and timing before purchase. If your remaining uncertainty is unacceptable, pause the purchase rather than treating a reassuring score as permission to proceed.
Keep a record of the piece you own and the research behind it. Label estimated value and authenticity claims accurately, and retain an independent backup of important documents.
Frequently asked questions
How can I tell if an autograph is real?
Work through the evidence: where it came from, clear photos of the whole item, whether it could be printed, stamped or autopen, how the signature flows compared with known examples from the same era, whether its certificate matches the issuer's record, and whether the price and seller make sense. For an important purchase, get a professional opinion.
What is JSA?
JSA (James Spence Authentication) is a third-party autograph authentication company. Its experts examine signatures and issue certificates or letters of authenticity with numbers you can check on JSA's official verification page.
Is a certificate of authenticity (COA) proof that an autograph is real?
No. A COA is only as good as whoever issued it, and real certificate numbers can be copied onto other items. Check the number with the issuer and make sure the record matches the item you are looking at.
How much does autograph authentication cost?
It depends on the company, the signer, the item's value and the service level. Get a current quote from the provider and add shipping and insurance both ways. Our cost guide includes a budget calculator.
Can I authenticate an autograph from a photo?
Not reliably. A photo can show red flags and help you decide what to ask, but it cannot show everything an examiner checks on the physical item. Photo opinions and 101 Pre-Screen are preliminary research, not a certificate of authenticity.