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What Makes a Certificate of Authenticity Trustworthy?

Learn what to look for in a credible Certificate of Authenticity, including the issuer, unique certification numbers, item identification and independent verification. A Certificate of Authenticity, commonly called a COA, can provide useful information about a signed item.

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However, a certificate does not automatically prove that an autograph is genuine.

The credibility of a COA depends on who issued it and what verification supports it.

Fat Boy Slim Signed

Anyone Can Produce a Certificate

A professional-looking certificate can be created easily. Logos, seals, official-looking language and printed signatures do not prove that a meaningful authentication process took place. Collectors should investigate the issuer, not just the appearance of the certificate.

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Who Issued It?

A trustworthy COA should come from an identifiable person or business.

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Collectors should be able to find information about:

  • who carried out the authentication

  • how the business operates

  • what methodology is used

  • how to contact the provider

Anonymous certificates should be treated with caution.

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Does It Have a Unique Certification Number?

A unique certification number helps connect the certificate to the specific item. This is much more useful than a generic certificate with no identifying reference.

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Can the Number Be Verified?

Online verification adds another layer of transparency. Collectors should ideally be able to enter the certification number and confirm that a matching record exists. This can reduce the risk of copied or reused certificates.

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Does the COA Identify the Item?

A useful certificate should contain enough information to identify what was assessed.

Depending on the provider, this may include:

  • signer name

  • item description

  • certification number

  • assessment date

  • identifying information

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Does the Provider Explain Its Process?

A credible authentication business should explain the general process used to reach an opinion.

It does not need to disclose proprietary databases or confidential reference material, but the methodology should not be completely hidden.

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Can Certificates Be Forged?

Yes. A genuine company's logo or certificate design can potentially be copied. This is why independent verification is important. Using holograms with printed numbers is always a very good start. They are void if removed - meaning that if a hologram sticker is removed, it cannot be re-used as the sticker almost 'falls apart'

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Does a COA Guarantee Authenticity?

No authentication opinion can provide absolute certainty in every situation. A COA records the authentication provider's conclusion based on the evidence available at the time.

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Autograph Alley Certificates

Items that meet Autograph Alley's authentication requirements can receive an individual AA certification number.

That number can be checked through the Autograph Alley online verification system.

This creates a record linking the certificate to the authenticated item.

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The Most Important Question

Do not simply ask: "Does this item have a COA?", Ask: "Who issued the COA, and can I independently verify it?" That is a much more useful question.

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Need an Autograph Assessed?

Autograph Alley provides online autograph authentication and pre-purchase opinion services to collectors worldwide.

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Submit clear photographs of your signed item for assessment.

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