Knowledge centre

Autographs

Autograph letters, signed documents and questions of authenticity.

A nineteenth-century autograph letter with its cover and a fragment of red wax seal

2 questions

  • What makes an autograph letter valuable?

    Content above all. A letter in which the writer discusses their work, their convictions or a documented historical moment is worth a multiple of a routine note of thanks by the same hand. Length, the presence of a full signature, the integrity of the sheet and an unbroken provenance then modify the figure.

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  • Are secretarial and machine signatures collectable?

    They have documentary interest but little market value, and we identify them as such without ambiguity. A secretarial hand, a rubber stamp and an autopen each leave characteristic evidence, and the independent specialists we engage examine for it as a matter of routine.

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Related guides

A signed card and a quill-written note in an archival sleeve beneath a brass magnifier

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Collecting Autographs

Autograph collecting rewards those who value content over celebrity. This guide explains the standard categories of autograph material, how authenticity is assessed, and why a letter usually outranks a signature.

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Two folded historic letters on laid paper, one with an intact red wax seal, in an archival box

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Collecting Historic Letters

Letters are the most human of documents. This guide considers correspondence as a collecting field: what to look for beyond the writer's name, how letters were physically made, and how to build a group that holds together.

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