Articles

Guides on certificates of authenticity and signatures

How to authenticate a signature, how to buy autographs safely, how to recognise a reliable certificate, and historical cases of forensic handwriting examination, explained by a handwriting examiner.

Guide

How to preserve autographs: 9 keys to protecting them

How to handle, store, display and digitise signed letters and documents, and keep their provenance and certificate together.

Guide

How to buy an autograph without being deceived

Seven keys to buying autographs and signed documents safely: price, provenance, verifiable certificate, handwritten signature and guarantees.

Guide

Certificate of authenticity or forensic handwriting report: which do I need?

The differences between a certificate of authenticity and a forensic handwriting report: when to use each, what material is needed and what the law says.

Guide

How to authenticate a signature on a historical document: a guide for collectors

How to authenticate a signature on a historical document step by step: handwritten or facsimile, pressure, ink, comparison, provenance and when to get a certificate.

Historical case

Handwriting examination in the documentary identification of Josef Mengele

How the analysis of letters and signatures helped confirm the identity of Josef Mengele, buried in Brazil as Wolfgang Gerhard.

Security

Security in certificates of authenticity: how to recognise a reliable one

Security features of certificates of authenticity and a checklist to recognise a reliable certificate before you buy.

Basics

What is the purpose of a certificate of authenticity (COA)?

What a certificate of authenticity (COA) is for: trust, protection against forgeries, proof of ownership and valuation.

Artists

Why should every artist issue a certificate of authenticity?

Why every artist should provide a certificate of authenticity with their works, what it should contain and its legal limits.

History

The evolution of certificates of authenticity: from royal seals to blockchain

The history of certificates of authenticity: from royal seals to holograms, NFTs and blockchain, and what remains irreplaceable.

Fraud

Certificates of authenticity and their role in fighting fraud

How a certificate of authenticity protects against fraud and forged signatures and documents, and how to check that the certificate itself is reliable.

Basics

What is a certificate of authenticity and what should it include?

What a certificate of authenticity (COA) is, what it is for, what it should include and who can issue one for signatures, autographs and historical documents.

More from my other websites

On Aprende Grafología (in Spanish) you will find more than 80 articles on famous signatures, graphology concepts and forensic handwriting cases.

SHOPAutographs & MilitariaCertified autographs and historical items for sale.EXPERT REPORTS AND GRAPHOLOGYAprende GrafologíaForensic handwriting reports, famous signature analyses and training (in Spanish).PERSONALITYAnálisis Grafológico OnlineGraphological personality reports (in Spanish).

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