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Determining whether an autograph is genuine is rarely as simple as comparing it with another signature found online.

Genuine signatures naturally vary. A person may sign differently depending on their age, the speed of the signing, the surface being signed, the type of pen being used, whether they are standing or seated, and how many items they are signing at the time.

 

For this reason, autograph authentication involves looking at the overall structure and characteristics of a signature rather than searching for an exact match.

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Look at the Signature as a Whole

Authenticators examine the way a signature is constructed.

This can include letter formation, proportions, spacing, slant, connecting strokes, starting and finishing points, and the overall shape and flow of the autograph.

A genuine signature does not need to look identical to every known example. What matters is whether its underlying characteristics are consistent with genuine signatures from the same person.

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Natural Flow Matters

A genuine autograph is normally written as a continuous action.

Copied or slowly drawn signatures can sometimes display hesitation, unusual pauses, awkward joins or inconsistent movement.

However, caution is important. A genuine signature can also look messy, rushed or unusual, particularly when signed quickly or under difficult circumstances.

One unusual characteristic alone is not enough to determine authenticity.

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Compare the Correct Period

Signatures often change throughout a person's career.

A musician's autograph from the beginning of their career might look dramatically different from one signed 30 years later.

For meaningful comparison, it is therefore helpful to use genuine reference examples from approximately the same period as the autograph being assessed.

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Consider the Item

The item itself can provide useful context.

Ask whether the item existed at the time the signature was supposedly obtained.

A signed album, photograph, poster or piece of merchandise can sometimes help establish a likely signing period.

The position and type of signature can also provide context, although these factors do not prove authenticity by themselves.

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Look at the Provenance

Provenance is the history of the item.

Strong provenance might include photographs from the signing, original receipts, correspondence, auction records or information from the person who obtained the autograph.

Good provenance can strengthen an authentication assessment.

However, a story alone does not make an autograph genuine. Provenance should support the signature rather than replace examination of it.

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Be Careful With Certificates of Authenticity

A Certificate of Authenticity does not automatically prove an autograph is genuine.

Certificates can be produced by anyone.

Collectors should consider who issued the certificate, whether the authentication provider can be identified, whether there is a verification number and whether the certificate can be independently checked.

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Avoid Looking for an Exact Match

Perfect duplication is not normally expected in genuine handwritten signatures.

Natural handwriting contains variation.

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In some circumstances, signatures that appear virtually identical can actually warrant additional investigation, particularly where mechanical reproduction such as autopen use is possible.

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The Most Important Point

There is no single trick that can reliably determine whether every autograph is genuine.

Authentication involves combining multiple forms of evidence.

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A signature should be assessed in context using appropriate reference material, known signature variations, provenance and the characteristics of the autograph itself.

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When significant value is involved, an independent authentication opinion can provide additional information before buying or selling signed memorabilia.