Autographs 101 · Collector guide

How do you authenticate a signature?

Document the item before judging the signature

Photograph the entire item, the signature close up, the back or reverse where relevant, labels, holograms and accompanying paperwork. Record the signer, item type, inscription, acquisition source and what the seller or previous owner specifically claimed.

Keep unknown details marked unknown. Do not fill gaps by copying information from a similar listing or by assuming a certificate belongs to the exact item in front of you.

Check certificate records with the issuer

Use the authentication company's official certificate lookup when one is available. Enter the number exactly, then compare the returned description or image with the physical piece. A matching number is evidence to review, not a guarantee that a different item displaying that number is genuine.

If the lookup is unavailable or inconsistent, contact the issuer rather than inventing an explanation. Save the date and source of your check.

Certificate lookup research guide

Use visual review to form questions, not a final verdict

Compare clear images with known authentic examples from reliable references when available. Look for overall structure, rhythm, placement and whether the autograph appears printed or hand-applied, but avoid deciding authenticity from one letter shape or a single photo artifact.

101 Pre-Screen provides AI-assisted observations from images. It is preliminary research, not professional authentication, an appraisal or a guarantee that a third-party service will agree.

101 Pre-Screen limits

Choose professional review when the decision warrants it

Professional authentication is most relevant when authenticity materially affects a purchase, sale, trade, insurance decision or important collection record. Confirm current fees, accepted items, service availability, return shipping and what documentation is supplied.

Compare providers for the exact task rather than assuming one company is always best. Keep authentication separate from card grading, autograph grading and valuation.

Compare PSA, JSA and Beckett service scope

Build a submission budget

PSA vs JSA: which fits your item

Keep the result and the supporting record together

After the item returns, photograph the result and keep the certificate, letter, submission receipt and any relevant shipping documentation with the collection record. Record what the provider actually examined.

Autographs 101 can organize the research and collection record. Paid membership adds saved research workflows and larger included allowances; it does not replace a professional authentication opinion.

Collection record guide

Frequently asked questions

How do you authenticate a signature?

Document the item and its history, check any certificate on the issuer's official lookup, compare the signature with reliable known examples, and use a professional authenticator when the decision matters.

Can you authenticate an autograph from a photo?

A photo can raise questions and spot obvious problems, but it isn't professional authentication of the physical item. 101 Pre-Screen gives an AI-assisted opinion from a photo, not a verdict.

When is professional authentication worth paying for?

When authenticity affects a purchase, sale, trade, insurance claim or an important collection record, and the piece is worth more than the full submission cost.

Turn a useful answer into research you can keep.

Preview the steps free. Gold and Emerald members can save a personalized playbook, add private notes and resume it through Research Shelf.

Before-you-buy review

Keep the questions, missing evidence and your own purchase limits in one place.

  1. Record the exact item, claimed signer and version being offered.
  2. Request whole-item photos, a sharp signature close-up and condition details.
  3. Separate the seller's claims from supporting signing or acquisition records.
  4. Record the price, shipping, fees and your own maximum total budget.
  5. Write down unresolved questions before deciding whether to proceed.
Certificate research file

Keep the claimed issuer, item comparison and unresolved mismatches together.

  1. Identify the claimed issuer from the label or certificate.
  2. Find the issuer's official lookup or support channel independently.
  3. Compare the issuer record, item description, label and actual piece.
  4. Record mismatches or missing information without treating a number match as authentication.
  5. Keep your questions and any response date for the next review.
Comparable-sales research

Build a repeatable record of relevant sold examples instead of relying on asking prices.

  1. Define the exact item type, signer, version and condition you are researching.
  2. Record a completed sale's source, date, currency and available price details.
  3. Note differences in authentication, inscriptions, condition and item type.
  4. Keep asking prices and unconfirmed sales separate from completed-sale evidence.
  5. Describe the limits of your comparison; do not turn a few examples into a guaranteed value.
Collection documentation plan

Organize a piece's history and the records you still need to gather.

  1. Describe a piece you own and its identifying details.
  2. List the photos, receipts and supporting records you have.
  3. Separate documented acquisition history from recollection or seller claims.
  4. Record condition observations and where supporting files are kept.
  5. Choose what to add to your private Vault after reviewing the information.

The interactive workspace requires JavaScript and a free account. Gold and Emerald add saving and updating across devices. Playbooks share the existing Research Shelf allowance: Gold 25 plans; Emerald 100.

A completed checklist is not authentication or an appraisal. Previewing does not save a record, start a scan or charge you.